| Name | Description | Year | Manufacturer | Rom of | Clone of |
|---|
| nes_sun2 | NES Cart Sunsoft 2 PCB | | | | |
| nes_sun3 | NES Cart Sunsoft 3 PCB | | | | |
| nes_sun4 | NES Cart Sunsoft 4 PCB | | | | |
| nes_sun5 | NES Cart Sunsoft 5A/5B PCB | | | | |
| nes_svision16 | NES Cart Supervision 16 in 1 PCB | | | | |
| nes_sxrom | NES Cart SxROM (MMC-1) PCB | | | | |
| nes_szrom | NES Cart SZROM (MMC-1) PCB | | | | |
| nes_t230 | NES Cart T-230 PCB | | | | |
| nes_t262 | NES Cart T-262 PCB | | | | |
| nes_tam_s1 | NES Cart Irem TAM-S1 PCB | | | | |
| nes_taptapmat | IGS Tap-tap Mat | | | | |
| nes_tc0190fmc | NES Cart Taito TC0190FMC PCB | | | | |
| nes_tc0190pal | NES Cart Taito TC0190FMC + PAL16R4 PCB | | | | |
| nes_tca01 | NES Cart Sachen TCA-01 PCB | | | | |
| nes_tcu01 | NES Cart Sachen TCU-01 PCB | | | | |
| nes_tcu02 | NES Cart Sachen TCU-02 PCB | | | | |
| nes_tech9in1 | NES Cart Techline 9 in 1 PCB | | | | |
| nes_tengen032 | NES Cart Tengen 800032 PCB | | | | |
| nes_tengen037 | NES Cart Tengen 800037 PCB | | | | |
| nes_tetrisfam | NES Cart RCM Tetris Family 9 in 1 PCB | | | | |
| nes_tf1201 | NES Cart UNL-TF1201 PCB | | | | |
| nes_th21311 | NES Cart UNL-TH2131-1 PCB | | | | |
| nes_tobidase | NES Cart Tobidase Daisakusen Pirate PCB | | | | |
| nes_tqrom | NES Cart TQROM PCB | | | | |
| nes_turbofile | ASCII Turbofile Backup RAM | | | | |
| nes_txc_22110 | NES Cart TXC 01-22110-000 PCB | | | | |
| nes_txc_22211 | NES Cart TXC 22211 PCB | | | | |
| nes_txc_comm | NES Cart TXC Cart Commandos PCB | | | | |
| nes_txc_dumarc | NES Cart TXC Du Ma Racing PCB | | | | |
| nes_txc_mjblock | NES Cart TXC Mahjong Block PCB | | | | |
| nes_txc_strikew | NES Cart TXC 01-22000-400 PCB | | | | |
| nes_txc_tw | NES Cart TXC Thunder Warrior PCB | | | | |
| nes_txrom | NES Cart TxROM (MMC-3) PCB | | | | |
| nes_txsrom | NES Cart TxSROM PCB | | | | |
| nes_un1rom | NES Cart UN1ROM PCB | | | | |
| nes_unrom512 | NES Cart Sealie UNROM 512 PCB | | | | |
| nes_uxrom | NES Cart UxROM PCB | | | | |
| nes_uxrom_cc | NES Cart UNROM M5 (Crazy Climber) PCB | | | | |
| nes_vaus | Taito Arkanoid Vaus Controller (NES) | | | | |
| nes_vausfc | Taito Arkanoid Vaus Controller (FC) | | | | |
| nes_vboyctrl | Nintendo Virtual Boy Controller | | | | |
| nes_vrc1 | NES Cart Konami VRC-1 PCB | | | | |
| nes_vrc2 | NES Cart Konami VRC-2 PCB | | | | |
| nes_vrc3 | NES Cart Konami VRC-3 PCB | | | | |
| nes_vrc4 | NES Cart Konami VRC-4 PCB | | | | |
| nes_vrc6 | NES Cart Konami VRC-6 PCB | | | | |
| nes_vrc7 | NES Cart Konami VRC-7 PCB | | | | |
| nes_vt02_vt03_soc | VT02/03 series System on a Chip (NTSC) | | | | |
| nes_vt02_vt03_soc_hummer | VT02/03 series System on a Chip (Hummer, NTSC) | | | | |
| nes_vt02_vt03_soc_pal | VT02/03 series System on a Chip (PAL) | | | | |
| nes_vt02_vt03_soc_pal_scram | VT02/03 series System on a Chip (PAL, with simple Opcode scrambling) | | | | |
| nes_vt02_vt03_soc_scram | VT02/03 series System on a Chip (NTSC, with simple Opcode scrambling) | | | | |
| nes_vt02_vt03_soc_sports | VT02/03 series System on a Chip (Sports, NTSC) | | | | |
| nes_vt02_vt03_soc_sports_pal | VT02/03 series System on a Chip (Sports, PAL) | | | | |
| nes_vt02_vt03_soc_waixing | VT02/03 series System on a Chip (Waixing, NTSC) | | | | |
| nes_vt02_vt03_soc_waixing_pal | VT02/03 series System on a Chip (Waixing, PAL) | | | | |
| nes_vt09_soc | VT09 series System on a Chip (NTSC) | | | | |
| nes_vt32_soc | VT32 series System on a Chip (FP) (NTSC) | | | | |
| nes_vt32_soc_pal | VT32 series System on a Chip (FP) (PAL) | | | | |
| nes_vt42xx_soc | unknown VT series System on a Chip with $42xx registers (NTSC) | | | | |
| nes_vt42xx_soc_pal | unknown VT series System on a Chip with $42xx registers (PAL) | | | | |
| nes_vt5201 | NES Cart VT5201 PCB | | | | |
| nes_waixing_a | NES Cart Waixing Type A PCB | | | | |
| nes_waixing_a1 | NES Cart Waixing Type A (Alt) PCB | | | | |
| nes_waixing_b | NES Cart Waixing Type B PCB | | | | |
| nes_waixing_c | NES Cart Waixing Type C PCB | | | | |
| nes_waixing_d | NES Cart Waixing Type D PCB | | | | |
| nes_waixing_dq8 | NES Cart Waixing Dragon Quest VIII PCB | | | | |
| nes_waixing_e | NES Cart Waixing Type E PCB | | | | |
| nes_waixing_f | NES Cart Waixing Type F PCB | | | | |
| nes_waixing_f1 | NES Cart Waixing Type F1 PCB | | | | |
| nes_waixing_ffv | NES Cart Waixing Final Fantasy V PCB | | | | |
| nes_waixing_fs304 | NES Cart Waixing FS-304 PCB | | | | |
| nes_waixing_g | NES Cart Waixing Type G PCB | | | | |
| nes_waixing_h | NES Cart Waixing Type H PCB | | | | |
| nes_waixing_h1 | NES Cart Waixing Type H (Alt) PCB | | | | |
| nes_waixing_i | NES Cart Waixing Type I PCB | | | | |
| nes_waixing_j | NES Cart Waixing Type J PCB | | | | |
| nes_waixing_sec | NES Cart Waixing Security Chip PCB | | | | |
| nes_waixing_sgz | NES Cart Waixing San Guo Zhi PCB | | | | |
| nes_waixing_sgzlz | NES Cart Waixing San Guo Zhong Lie Zhuan PCB | | | | |
| nes_waixing_sh2 | NES Cart Waixing SH2 PCB | | | | |
| nes_waixing_wxzs | NES Cart Waixing Wai Xing Zhan Shi PCB | | | | |
| nes_waixing_wxzs2 | NES Cart Waixing Wai Xing Zhan Shi 2 PCB | | | | |
| nes_x1_005 | NES Cart Taito X1-005 PCB | | | | |
| nes_x1_017 | NES Cart Taito X1-017 PCB | | | | |
| nes_xiaozy | NES Cart Xiao Zhuan Yuan PCB | | | | |
| nes_yoko | NES Cart Yoko PCB | | | | |
| nes_yung08 | NES Cart Super Mario Bros. 2 YUNG-08 PCB | | | | |
| nes_zapper | Nintendo Zapper Lightgun | | | | |
| nes_zapper_sensor | Nintendo Zapper Lightgun Photodiode | | | | |
| nes_zemina | NES Cart Zemina PCB | | | | |
| nes_zgdh | NES Cart Zhongguo Daheng PCB | | | | |
| nes_zz | NES Cart PAL-ZZ PCB | | | | |
| nesapu | RP2A0X APU | | | | |
| nesm8 | M8 Game Selectable Working Product Display (US, set 1) | 1986 | Nintendo | | |
| nesm8a | M8 Game Selectable Working Product Display (US, set 2) | 1986 | Nintendo | nesm8 | nesm8 |
| nesm8b | M8 Game Selectable Working Product Display (US, set 3) | 1986 | Nintendo | nesm8 | nesm8 |
| nespal | Nintendo Entertainment System (PAL) | 1987 | Nintendo | nes | nes |
| nesvt270 | unknown VT3xx based 270-in-1 (BL-867 PCB03) | 2022 | | | |
| netchu02b | Netchuu Pro Yakyuu 2002 (NPY1 Ver. B) | 2002 | Namco | netchu02c | netchu02c |
| netchu02c | Netchuu Pro Yakyuu 2002 (NPY1 Ver. C) | 2002 | Namco | sys246 | |
| netlist_core | Netlist Core Device | | | | |
| netlist_cpu | Netlist CPU Device | | | | |
| netlist_sound | Netlist Sound Device | | | | |
| netmerc | Sega NetMerc | 1993 | Sega | | |
| nettoqc | Nettoh Quiz Champion (Japan) | 1995 | Nakanihon | | |
| netwars | Net Wars | 1983 | Orca (Esco Trading Co license) | | |
| nevada | VLC Nevada | 1995 | VLC Inc. | | |
| nevadafw | Nevada (French, encrypted) | 198? | | | |
| new2001 | New 2001 (Italy, Ver. 200N) | 2000 | Subsino | | |
| newapunk | New Atomic Punk - Global Quest (US) | 1992 | Irem America | bbmanw | bbmanw |
| newbrain | NewBrain AD | 1981 | Grundy Business Systems Ltd | | |
| newbrain_eim | NewBrain EIM | | | | |
| newbrain_expansion_slot | NewBrain expansion port | | | | |
| newbrain_fdc | NewBrain FDC | | | | |
| newbraina | NewBrain A | 1981 | Grundy Business Systems Ltd | newbrain | newbrain |
| newbrainmd | NewBrain MD | 1981 | Grundy Business Systems Ltd | newbrain | newbrain |
| newcanasta | New Canasta | 2010 | Marsaplay | | |
| newdixie | New Dixieland (Bingo) | 19?? | Seeben (Belgium) | | |
| newfant | New Fantasia (1995 copyright) | 1995 | Comad & New Japan System | | |
| newfanta | New Fantasia (1994 copyright) | 1994 | Comad & New Japan System | newfant | newfant |
| newhilop | New Hi-Low Poker | 198? | Song Won? | | |
| newhunter | New HUNTer | 1992 | Karam | tisub | tisub |
| newhunterb | New HUNTer (bootleg, set 1) | 1993 | bootleg | tisub | tisub |
| newhunterc | New HUNTer (bootleg, set 2) | 1993 | bootleg | tisub | tisub |
| newhunterd | New HUNTer (bootleg, set 3) | 1993 | bootleg | tisub | tisub |
| newmcard | New Magic Card | 2000 | High Video | | |
| newpuc2 | Newpuc2 (set 1) | 1980 | hack | puckman | puckman |
| newpuc2b | Newpuc2 (set 2) | 1980 | hack | puckman | puckman |
| newpuckx | New Puck-X | 1980 | hack | puckman | puckman |
| news | News (set 1) | 1993 | Poby / Virus | | |
| news_020_mmu | Sony NEWS 68020 MMU | | | | |
| news_hid_hle | Sony NEWS Keyboard and Mouse (HLE) | | | | |
| news_iop_scsi_dma | Sony NEWS SCSI DMA Helper | | | | |
| newsa | News (set 2) | 1993 | Poby | news | news |
| newsin7 | New Sinbad 7 (set 1) | 1983 | ATW USA, Inc. | | |
| newsin7a | New Sinbad 7 (set 2) | 1982 | ATW USA, Inc | newsin7 | newsin7 |
| newtangl | New Tropical Angel | 1983 | Irem | troangel | troangel |
| newtiger | New Tiger | 200? | High Video | | |
| newtnotp | Newton Notepad (prototype) | 1992 | Apple Computer | | |
| newtonmp | Newton MessagePad | 1993 | Apple Computer | | |
| newufo | New UFO Catcher (standard) | 1991 | Sega | | |
| newufo_nfl | New UFO Catcher (Team NFL) | 1991 | Sega | newufo | newufo |
| newufo_sonic | New UFO Catcher (Sonic The Hedgehog) | 1991 | Sega | newufo | newufo |
| newufo_xmas | New UFO Catcher (Christmas season ROM kit) | 1991 | Sega | newufo | newufo |
| newwave | New Wave | 1985 | Bell Games | blakpyra | blakpyra |
| newxpang | New Cross Pang (set 1) | 1999 | F2 System | | |
| newxpanga | New Cross Pang (set 2) | 1999 | F2 System | newxpang | newxpang |
| next | NeXT Computer | 1987 | Next Software Inc | | |
| nextc | NeXTcube | 1990 | Next Software Inc | nexts | nexts |
| nextcent | Next Century (bootleg of Defender) | 1981 | bootleg (Petaco) | defender | defender |
| nextct | NeXTcube Turbo | 1992 | Next Software Inc | nextst | nextst |
| nextctc | NeXTcube Turbo Color | 1992 | Next Software Inc | nextst | nextst |
| nextfase | Next Fase (bootleg of Phoenix) | 1981 | bootleg (Petaco S.A.) | phoenix | phoenix |
| nextkbd | NeXT Keyboard | | | | |
| nextmo | NeXT Magneto-optical drive | | | | |
| nexts | NeXTstation | 1990 | Next Software Inc | | |
| nexts2 | NeXTstation (X15 variant) | 1990 | Next Software Inc | nexts | nexts |
| nextsc | NeXTstation Color | 1990 | Next Software Inc | nexts | nexts |
| nextst | NeXTstation Turbo | 1990 | Next Software Inc | | |
| nextstc | NeXTstation Turbo Color | 1990 | Next Software Inc | nextst | nextst |
| nf_08x | No Fear: Dangerous Sports (0.8X) | 1995 | Williams | nf_23x | nf_23x |
| nf_10f | No Fear: Dangerous Sports (1.0F) | 1995 | Williams | nf_23x | nf_23x |
| nf_20 | No Fear: Dangerous Sports (2.0) | 1995 | Williams | nf_23x | nf_23x |
| nf_22 | No Fear: Dangerous Sports (2.2) | 1995 | Williams | nf_23x | nf_23x |
| nf_23 | No Fear: Dangerous Sports (2.3) | 1995 | Williams | nf_23x | nf_23x |
| nf_23f | No Fear: Dangerous Sports (2.3F) | 1995 | Williams | nf_23x | nf_23x |
| nf_23x | No Fear: Dangerous Sports (2.3X) | 1995 | Williams | | |
| nf500a | NF500A | 1985 | China State-owned 830 Factory | | |
| nfb96 | New Fruit Bonus '96 Special Edition (v3.63, C1 PCB) | 1996 | Amcoe | | |
| nfb96a | New Fruit Bonus '96 Special Edition (v3.62, C1 PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96b | New Fruit Bonus '96 Special Edition (v3.54, D PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96c | New Fruit Bonus '96 Special Edition (v3.62, DK PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96d | New Fruit Bonus '96 (v3.1, A PCB, set 1) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96e | New Fruit Bonus '96 Special Edition (v3.61a, C1 PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96f | New Fruit Bonus '96 Special Edition (v3.61a, DK PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96g | New Fruit Bonus '96 Special Edition (v3.61, DK PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96h | New Fruit Bonus '96 Special Edition (v3.60, DK PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96i | New Fruit Bonus '96 Special Edition (v3.53, D PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96j | New Fruit Bonus '96 Special Edition (v3.40, D PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96k | New Fruit Bonus '96 Special Edition (v97-3.3c, D PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96l | New Fruit Bonus '96 (v97-3.1c, B PCB) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96m | New Fruit Bonus '96 (v3.1, A PCB, set 2) | 1996 | Amcoe | nfb96 | nfb96 |
| nfb96se | New Fruit Bonus '96 Special Edition (bootleg set 1, v97-3.3c Portuguese) | 1996 | bootleg | nfb96 | nfb96 |
| nfb96sea | New Fruit Bonus '96 Special Edition (bootleg set 2, v97-3.3c English) | 1996 | bootleg | nfb96 | nfb96 |
| nfb96seb | New Fruit Bonus '96 Special Edition (bootleg set 3, v97-3.3c Portuguese) | 1996 | bootleg | nfb96 | nfb96 |
| nfb96sec | New Fruit Bonus '96 Special Edition (bootleg set 4, v97-3.3c English) | 1996 | bootleg | nfb96 | nfb96 |
| nfb96txt | New Fruit Bonus '96 Special Edition (v1.22 Texas XT, C2 PCB) | 2000 | Amcoe | nfb96 | nfb96 |
| nfl | NFL (CPU 1.01, display A1.02) | 2001 | Stern | | |
| nflclsfb | NFL Classic Football (US, NCF3 Ver.A.) | 2003 | Namco / Metro | | |
| nflfoot | NFL Football | 1983 | Bally Midway | | |
| nfm | Fruit Bonus 2002 (Ming-Yang Electronic / TSK, vFB02-07A) | 2003 | Ming-Yang Electronic / TSK | | |
| nfma | Fruit Bonus 2002 (Ming-Yang Electronic / TSK, vFB02-01A) | 2003 | Ming-Yang Electronic / TSK | nfm | nfm |
| nforcepc | Nvidia nForce PC (CRUSH11/12) | 2002 | Nvidia | | |
| nfs | Need for Speed - 4 Cab Link (2 Discs) (v1.0.1 Rev B) | 2003 | Global VR | | |
| nfsgt | Need for Speed GT (Hard Drive+2 Discs) (v1.1.0 Rev C) | 2004 | Global VR | | |
| nfsug | Need For Speed: Underground Install (2 Discs) (v1.1) | 2005 | Global VR | | |
| ng_cmc_prot | Neo Geo CMC42/CMC40 Protection | | | | |
| ng_cthd_prot | Neo Geo CTHD Protection (bootleg) | | | | |
| ng_fatfury_prot | Neo Geo Fatal Fury 2 Protection | | | | |
| ng_kof2002_prot | Neo Geo KoF 2002 Protection | | | | |
| ng_kof2k3bl_prot | Neo Geo KoF 2003 Bootleg Protection | | | | |
| ng_kof98_prot | Neo Geo KoF 98 Protection | | | | |
| ng_memcard | NeoGeo Memory Card | | | | |
| ng_mslugx_prot | Neo Geo Metal Slug X Protection | | | | |
| ng_mv1 | Neo-Geo MV-1 | 1990 | SNK | neogeo | |
| ng_mv1f | Neo-Geo MV-1F | 1990 | SNK | ng_mv1 | ng_mv1 |
| ng_mv1fz | Neo-Geo MV-1FZ | 1990 | SNK | ng_mv1 | ng_mv1 |
| ng_mv2f | Neo-Geo MV-2F | 1990 | SNK | neogeo | |
| ng_mv4f | Neo-Geo MV-4F | 1990 | SNK | neogeo | |
| ng_pcm2_prot | Neo Geo NEOPCM2 Protection | | | | |
| ng_pvc_prot | Neo Geo PVC Protection | | | | |
| ng_sma_prot | Neo Geo SMA Protection | | | | |
| ngalsumr | Night Gal Summer (Japan 850702 NGS 0-01) | 1985 | Nichibutsu | | |
| ngbc | NeoGeo Battle Coliseum | 2005 | Sammy / SNK Playmore | awbios | |
| ngbcj | NeoGeo Battle Coliseum (Japan) | 2005 | Sammy / SNK Playmore | ngbc | ngbc |
| ngboot_prot | Neo Geo Bootleg Protection(s) | | | | |
| ngdup23a | Naomi DIMM Firmware Updater (2.13) (GDS-0023A) | 2001 | Sega | naomigd | |
| ngdup23c | Naomi DIMM Firmware Updater (2.17) (GDS-0023C) | 2001 | Sega | naomigd | |
| ngdup23e | Naomi DIMM Firmware Updater (3.17) (GDS-0023E) | 2001 | Sega | naomigd | |
| ngen | NGEN CP-001 | 1983 | Convergent Technologies | | |
| ngen_kb | NGEN Keyboard | | | | |
| ngenb38 | B28/38 | 1991 | Financial Products Corp. | ngen | ngen |
| ngg_10 | No Good Gofers (1.0) | 1997 | Williams | ngg_13 | ngg_13 |
| ngg_13 | No Good Gofers (1.3) | 1997 | Williams | | |
| ngg_p06 | No Good Gofers (p0.6) | 1997 | Williams | ngg_13 | ngg_13 |
| ngndshkr | Nitro Ground Shaker | 1980 | Bally | | |
| ngold | Jack Potten's Poker (NGold, set 1) | 198? | | pottnpkr | pottnpkr |
| ngolda | Jack Potten's Poker (NGold, set 2) | 198? | | pottnpkr | pottnpkr |
| ngoldb | Jack Potten's Poker (NGold, set 3) | 198? | | pottnpkr | pottnpkr |
| ngp | NeoGeo Pocket | 1998 | SNK | | |
| ngpc | NeoGeo Pocket Color | 1999 | SNK | ngp | ngp |
| ngpgal | Nekketsu Grand-Prix Gal (Japan) | 1991 | Nichibutsu | | |
| ngtbunny | Night Bunny (Japan 840601 MRN 2-10) | 1984 | Nichibutsu | | |
| ngtfever | Night Fever | 1979 | Sonic | bigtown | bigtown |
| nhidctch | New Hidden Catch (World) / New Tul Lin Gu Lim Chat Ki '98 (Korea) (pcb ver 3.02) | 1999 | Eolith | | |
| nhomerun | NEW Moero!! Pro Yakyuu Homerun Kyousou | 1988 | Jaleco | | |
| nibbler | Nibbler (rev 9, set 1) | 1982 | Rock-Ola | | |
| nibbler_sound | Rock-Ola Nibbler Sound | | | | |
| nibbler6 | Nibbler (rev 6) | 1982 | Rock-Ola | nibbler | nibbler |
| nibbler7 | Nibbler (rev 7) | 1982 | Rock-Ola | nibbler | nibbler |
| nibbler8 | Nibbler (rev 8) | 1982 | Rock-Ola | nibbler | nibbler |
| nibblera | Nibbler (rev 9, set 2) | 1982 | Rock-Ola | nibbler | nibbler |
| nibblero | Nibbler (rev 8, Olympia) | 1983 | Rock-Ola (Olympia license) | nibbler | nibbler |
| nibblerp | Nibbler (rev 6, Pioneer Balloon conversion) | 1982 | Rock-Ola | nibbler | nibbler |
| nicetsuk | Tsukkomi Yousei Gips Nice Tsukkomi (NTK1 Ver.A) | 2002 | Namco / Metro | | |
| nichidvd | Nichibutsu High Rate DVD BIOS | 1998 | Nichibutsu | | |
| nichisel | DVD Select (Japan) | 2000 | Nichibutsu | nichidvd | |
| nichisnd | Nichibutsu Sound Device | | | | |
| nick | Intelligent Designs NICK | | | | |
| nightgal | Night Gal (Japan 840920 AG 1-00) | 1984 | Nichibutsu | | |
| nightlov | Night Love (Japan 860705) | 1986 | Central Denshi | | |
| nightmare | Night Mare (Spain) | 1982 | E.F.O. | | |
| nightr20 | Night Rider (rev. 20) | 1977 | Bally | nightrdr | nightrdr |
| nightrai | Night Raid (V2.03J 2001/02/26 17:00) | 2001 | Takumi | coh3002t | |
| nightrdr | Night Rider (rev. 21) | 1977 | Bally | | |
| nightstr | Night Striker (World) | 1989 | Taito Corporation Japan | | |
| nightstrj | Night Striker (Japan) | 1989 | Taito Corporation | nightstr | nightstr |
| nightstru | Night Striker (US) | 1989 | Taito America Corporation | nightstr | nightstr |
| nile_sound | Seta ST-0026 NiLe (Sound) | | | | |
| nimbus | Nimbus | 1986 | Research Machines | | |
| ninclown | Ninja Clowns (27 oct 91) | 1991 | Strata / Incredible Technologies | | |
| nineball | Nine Ball | 1980 | Stern | | |
| ninja | Ninja (315-5102) | 1985 | Sega | seganinj | seganinj |
| ninjak | The Ninja Kids (World) | 1990 | Taito Corporation Japan | | |
| ninjakd2 | Ninja-Kid II / NinjaKun Ashura no Shou (set 1) | 1987 | UPL | | |
| ninjakd2a | Ninja-Kid II / NinjaKun Ashura no Shou (set 2, bootleg?) | 1987 | UPL | ninjakd2 | ninjakd2 |
| ninjakd2b | Ninja-Kid II / NinjaKun Ashura no Shou (set 3, bootleg?) | 1987 | UPL | ninjakd2 | ninjakd2 |
| ninjakd2c | Ninja-Kid II / NinjaKun Ashura no Shou (set 4) | 1987 | UPL | ninjakd2 | ninjakd2 |
| ninjakj | The Ninja Kids (Japan) | 1990 | Taito Corporation | ninjak | ninjak |
| ninjaku | The Ninja Kids (US) | 1990 | Taito America Corporation | ninjak | ninjak |
| ninjakun | Ninjakun Majou no Bouken | 1984 | UPL (Taito license) | | |
| ninjamas | Ninja Master's - Haoh-ninpo-cho | 1996 | ADK / SNK | neogeo | |
| ninjaslt | Ninja Assault (World, NJA2 Ver.A) | 2000 | Namco | naomi | |
| ninjaslta | Ninja Assault (Asia, NJA4 Ver.A) | 2000 | Namco | ninjaslt | ninjaslt |
| ninjasltj | Ninja Assault (Japan, NJA1 Ver.A) | 2000 | Namco | ninjaslt | ninjaslt |
| ninjasltu | Ninja Assault (US, NJA3 Ver.A) | 2000 | Namco | ninjaslt | ninjaslt |
| ninjaw | The Ninja Warriors (World, later version) | 1987 | Taito Corporation Japan | | |
| ninjaw1 | The Ninja Warriors (World, earlier version) | 1987 | Taito Corporation Japan | ninjaw | ninjaw |
| ninjawj | The Ninja Warriors (Japan) | 1987 | Taito Corporation | ninjaw | ninjaw |
| ninjawu | The Ninja Warriors (US, Romstar license) | 1987 | Taito Corporation America (licensed to Romstar) | ninjaw | ninjaw |
| ninjemak | Ninja Emaki (US) | 1986 | Nichibutsu | | |
| ninjemat | Ninja Emaki (Tecfri license) | 1986 | Nichibutsu (Tecfri license) | ninjemak | ninjemak |
| nios2 | Altera Nios II Processor | | | | |
| nitd | Nightmare in the Dark | 2000 | Eleven / Gavaking | neogeo | |
| nitdbl | Nightmare in the Dark (bootleg) | 2001 | bootleg | nitd | nitd |
| nitedrvr | Night Driver | 1976 | Atari | | |
| nitrobal | Nitro Ball (World, set 1) | 1992 | Data East Corporation | | |
| nitrobala | Nitro Ball (World, set 2) | 1992 | Data East Corporation | nitrobal | nitrobal |
| nitrobalb | Nitro Ball (World, set 3) | 1992 | Data East Corporation | nitrobal | nitrobal |
| nixpc01 | 8810/25 CPC - PC01 | 198? | Nixdorf Computer AG | ibm5150 | ibm5150 |
| niyanpai | Niyanpai (Japan) | 1996 | Nichibutsu | | |
| njp60in1 | NJ Pocket 60-in-1 handheld 'X zero' (NTSC) | 200? | | | |
| nkdodge | Nekketsu Koukou Dodgeball Bu (Japan) | 1987 | Technos Japan | spdodgeb | spdodgeb |
| nkdodgeb | Nekketsu Koukou Dodgeball Bu (Japan, bootleg) | 1987 | bootleg | spdodgeb | spdodgeb |
| nkishusp | Mahjong Nenrikishu SP (Japan, V250J) | 1998 | IGS / Alta | lhb2 | lhb2 |
| nkoulit | Gkoulit (encrypted GFX) | 1995 | JK Amusement | royalcrd | royalcrd |
| nl_analog_in | Netlist Analog Input | | | | |
| nl_analog_out | Netlist Analog Output | | | | |
| nl_int_out | Netlist Integer Output | | | | |
| nl_logic_in | Netlist Logic Input | | | | |
| nl_logic_out | Netlist Logic Output | | | | |
| nl_ram_ptr | Netlist RAM Pointer | | | | |
| nl_stream_in | Netlist Stream Input | | | | |
| nl_stream_out | Netlist Stream Output | | | | |
| nlq401 | Schneider NLQ 401 Matrix Printer | | | | |
| nmaster | Oni - The Ninja Master (Japan) | 1995 | Banpresto / Pandorabox | metmqstr | metmqstr |
| nmc9306 | NMC9306 EEPROM | | | | |
| nmg5 | Multi 5 / New Multi Game 5 (set 1) | 1998 | Yun Sung | | |
| nmg5a | Multi 5 / New Multi Game 5 (set 2, censored) | 1998 | Yun Sung | nmg5 | nmg5 |
| nmg5e | Multi 5 / New Multi Game 5 (set 3, earlier) | 1997 | Yun Sung | nmg5 | nmg5 |
| nmicro | Micro Chess | 1981 | Novag Industries | | |
| nmicro2 | Micro II (Novag) | 1982 | Novag Industries / Heuristic Software | | |
| nmk004 | NMK004 | | | | |
| nmk112 | NMK112 | | | | |
| nmk16spr | NMK 16 bit Sprite hardware | | | | |
| nmk214 | NMK214 Graphics Descrambler | | | | |
| nmondop | New Mondo Plus (V0.6I) | 1998 | Dyna | | |
| nmouse | Naughty Mouse (set 1) | 1981 | Amenip (Palcom Queen River) | | |
| nmouseb | Naughty Mouse (set 2) | 1981 | Amenip Nova Games Ltd. | nmouse | nmouse |
| nmoves | Night Moves | 1989 | International Concepts | | |
| nms1160 | Philips NMS-1160 | | | | |
| nms801 | NMS-801 (MSX1, Italy) | 1989 | Philips | | |
| nms8220 | NMS 8220 (MSX2, Europe) | 1987 | Philips | | |
| nms8245 | NMS 8245 (MSX2, Europe) | 1987 | Philips | | |
| nms8245f | NMS 8245F (MSX2, France) | 1987 | Philips | nms8245 | nms8245 |
| nms8250 | NMS 8250 (MSX2, Europe) | 1987 | Philips | nms8255 | nms8255 |
| nms8250_16 | NMS 8250/16 (MSX2, Spain) | 1987 | Philips | nms8255 | nms8255 |
| nms8250_19 | NMS 8250/19 (MSX2, France) | 1987 | Philips | nms8255 | nms8255 |
| nms8255 | NMS 8255 (MSX2, Europe) | 1987 | Philips | | |
| nms8255f | NMS 8255F (MSX2, France) | 1987 | Philips | nms8255 | nms8255 |
| nms8260 | NMS 8260 (MSX2, Prototype) | 1987 | Philips | | |
| nms8280 | NMS 8280 (MSX2, Europe) | 1987 | Philips | | |
| nms8280f | NMS 8280F (MSX2, France) | 1986 | Philips | nms8280 | nms8280 |
| nms8280g | NMS 8280G (MSX2, Germany) | 1986 | Philips | nms8280 | nms8280 |
| nms9100 | NMS 9100 | 198? | Philips | ibm5150 | ibm5150 |
| nmsengen | Nekketsu Mahjong Sengen! AFTER 5 (Japan) | 1991 | Video System Co. | | |
| nn71003f | NN71003F mpeg audio chip | | | | |
| nndmseal | Nandemo Seal Iinkai (ver 1.3) | 1997 | I'Max / Jaleco | | |
| nndmseal11 | Nandemo Seal Iinkai (ver 1.1) | 1997 | I'Max / Jaleco | nndmseal | nndmseal |
| nndmseala | Nandemo Seal Iinkai (Astro Boy ver. 1.0?) | 1997 | I'Max / Jaleco | nndmseal | nndmseal |
| nndmsealb | Nandemo Seal Iinkai (Astro Boy ver. 1.1) | 1997 | I'Max / Jaleco | nndmseal | nndmseal |
| nndmsealc | Nandemo Seal Iinkai (alternate ver 1.0) | 1997 | I'Max / Jaleco | nndmseal | nndmseal |
| noahsark | Noah's Ark | 1983 | Enter-Tech, Ltd. | | |
| nob | Noboranka (Japan) | 1986 | Coreland / Data East Corporation | | |
| nobb | Noboranka (Japan, bootleg) | 1986 | bootleg (Game Electronics) | nob | nob |
| nochnyev | Nochnye vorishki | 19?? | bootleg (Elektronika) | gnw_mmouse | gnw_mmouse |
| node_id | Apollo Node ID | | | | |
| noki3210 | Nokia 3210 | 1999 | Nokia | | |
| noki3310 | Nokia 3310 | 2000 | Nokia | | |
| noki3330 | Nokia 3330 | 2001 | Nokia | | |
| noki3410 | Nokia 3410 | 2002 | Nokia | | |
| noki5210 | Nokia 5210 | 2002 | Nokia | | |
| noki6210 | Nokia 6210 | 2000 | Nokia | | |
| noki6250 | Nokia 6250 | 2000 | Nokia | | |
| noki7110 | Nokia 7110 | 1999 | Nokia | | |
| noki8210 | Nokia 8210 | 1999 | Nokia | | |
| noki8250 | Nokia 8250 | 2000 | Nokia | | |
| noki8850 | Nokia 8850 | 1999 | Nokia | | |
| noki8890 | Nokia 8890 | 2000 | Nokia | | |
| nomnlnd | Sengoku no Jieitai | 1980 | Universal | | |
| nomnlndg | No Man's Land (Gottlieb) | 1980 | Universal (Gottlieb license) | nomnlnd | nomnlnd |
| nor6007a | Noraut Poker (6007 32k) | 1988 | Noraut Ltd. | | |
| nor6007b | Noraut Poker (6007 64k) | 1988 | Noraut Ltd. | | |
| noraut3a | Noraut Jacks Plus / Joker Poker (V3.010a) | 2002 | Noraut Ltd. | | |
| noraut3b | Noraut Jacks Plus / Joker Poker (V3.011a) | 2003 | Noraut Ltd. | | |
| norautdx | Noraut Deluxe Poker (console) | 198? | Noraut Ltd. | | |
| norautjo | Noraut Joker Poker (original) | 198? | Noraut Ltd. | | |
| norautjp | Noraut Joker Poker (alt) | 1988 | Noraut Ltd. | norautp | norautp |
| norautn1a | Noraut Joker Poker (N1A) | 1988 | Noraut Ltd. | norautp | norautp |
| norautp | Noraut Poker | 1988 | Noraut Ltd. | | |
| norautpb | Joker Poker 2000 (£15, Winbank) | 1988 | Noraut Ltd. | | |
| norautpl | Noraut Joker Poker (Prologic HW) | 198? | Video Fun Games Ltd. | | |
| norautpn | Noraut Deluxe Poker (bootleg) | 198? | bootleg | norautp | norautp |
| norautpt | Noraut Joker Poker (text hack) | 198? | bootleg | norautjo | norautjo |
| norautra | Noraut Red Hot Joker Poker (alt HW) | 198? | Noraut Ltd. | | |
| norautrh | Noraut Red Hot Joker Poker | 1988 | Noraut Ltd. | | |
| norautu | Noraut Poker (NTX10A) | 1988 | Noraut Ltd. | | |
| norautua | Noraut Joker Poker (console, set 1) | 198? | Noraut Ltd. | | |
| norautub | Noraut Joker Poker (console, set 2) | 198? | Noraut Ltd. | norautua | norautua |
| nordle2x | Nord Lead 2X | 2003 | Clavia | | |
| nost | Nostradamus | 1993 | Face | | |
| nostj | Nostradamus (Japan) | 1993 | Face | nost | nost |
| nostk | Nostradamus (Korea) | 1993 | Face | nost | nost |
| nostromo | Nostromo | 198? | bootleg | | |
| notechan | Note Chance | 1995 | Banpresto | | |
| notetakr | NoteTaker | 1978 | Xerox | | |
| nouryoku | Nouryoku Koujou Iinkai | 1995 | Tecmo | | |
| nouryokup | Nouryoku Koujou Iinkai (prototype) | 1995 | Tecmo | nouryoku | nouryoku |
| nova2001 | Nova 2001 (Japan) | 1983 | UPL | | |
| nova2001h | Nova 2001 (Japan, hack?) | 1983 | UPL | nova2001 | nova2001 |
| nova2001u | Nova 2001 (US) | 1983 | UPL (Universal license) | nova2001 | nova2001 |
| noved | Nove Diamante (bootleg) | 2006 | bootleg (Kon) | nfb96 | nfb96 |
| novell_dcb | Novell Disk Coprocessor Board (#738-133-001) | | | | |
| novoplay | Novo Play Multi Card / Club Card | 1986 | Admiral / Novomatic | | |
| novoplaya | Novo Play Club Card (V6.2H) | 1992 | Novo Play International | novoplay | novoplay |
| novoplayb | Novo Play Club Card (V3.3H) | 1991 | Novo Play International | novoplay | novoplay |
| np600a3 | InterLan NP600A-3 Intelligent Protocol Processor | | | | |
| npc8300 | PC-8300 | 1987 | NEC | pc8201 | pc8201 |
| npcartv1 | Neo Print V1 (World) (E1a) | 1996 | SNK | | |
| npcramen | Neo Print - Chicken Ramen (Japan) | 1996 | SNK | | |
| npeurver | Neo Print - European Version (World) (T4i 2.00) | 1997 | SNK | | |
| npeurver2 | Neo Print - European Version II (World) (T4i 3.07) | 1996 | SNK | | |
| npfpit | Neo Print - Fuyu Pri Iitoko-dori (Japan) (T4i 3.07) | 1999 | SNK | | |
| npft | Neo Print - Fairy Tales (World) (T4i 3.07) | 1999 | SNK | | |
| npmillen | Neo Print - Millennium Multi Shot Edition (World) (T4i 3.07) | 1999 | SNK | | |
| npotogib | Neo Print - Otogibanashi (Japan) (T4i 3.00) | 1997 | SNK | | |
| nppopeye | Neo Print - Popeye (Japan) (T4i 3.04) | 1997 | SNK | | |
| nprimo | Primo (Novag) | 1987 | Novag Industries / Intelligent Heuristic Programming | | |
| nprinces | Ninja Princess (Japan, 315-5051, 64k Ver. bootleg?) | 1985 | bootleg? | seganinj | seganinj |
| nprincesb | Ninja Princess (Japan, 315-5051?, 128k Ver. bootleg?) | 1985 | bootleg? | seganinj | seganinj |
| nprinceso | Ninja Princess (Japan, 315-5098, 128k Ver.) | 1985 | Sega | seganinj | seganinj |
| nprincesu | Ninja Princess (Japan, 64k Ver. not encrypted) | 1985 | Sega | seganinj | seganinj |
| nprobowl | New Pro Bowl | 1996 | Zuck / Able Corp | | |
| nprsp | NeopriSP Retro Collection (Japan) | 1996 | SNK | | |
| npscv1 | Neo Print - Senyou Cassette Ver. 1 (Japan) | 1996 | SNK | | |
| npskv | Neo Print - Suizokukan Version (Japan) (T4i 2.00) | 1997 | SNK | | |
| npsprg98 | Neo Print - Spring '98 (T4i 3.07) | 1998 | SNK | | |
| npsprgv4 | Neo Print - Spring Ver. 4 (Japan) (T4f 1.00) | 1997 | SNK | | |
| npspscv | Neo Print SP! Super Collection Version (Japan) | 1997 | SNK | | |
| npssr2 | Neo Print Special: Sekai Ryokou 2 (Japan) | 1996 | SNK | | |
| npusagif | Neo Print - Usagi Frame (Japan) (T4i 3.07) | 1997 | SNK | | |
| nrallyx | New Rally X | 1981 | Namco | | |
| nrallyxb | New Rally X (bootleg?) | 1981 | Namco | nrallyx | nrallyx |
| nratechu | Neratte Chu (ver. 1.10) | 1996 | Seta | | |
| nrrd45 | RRD45 CD-ROM (New) | | | | |
| ns_h3001 | NES Cart Irem H-3001 PCB | | | | |
| ns10_type2_decrypter | Namco System 10 Type 2 decrypter | | | | |
| ns10_type2_decrypter_nonlinear | Namco System 10 Type 2 decrypter (non-linear bit lookup table) | | | | |
| ns16450 | National Semiconductor NS16450 UART | | | | |
| ns16550 | National Semiconductor NS16550 UART | | | | |
| ns32008 | National Semiconductor NS32008 | | | | |
| ns32016 | National Semiconductor NS32016 | | | | |
| ns32032 | National Semiconductor NS32032 | | | | |
| ns32081 | National Semiconductor NS32081 Floating-Point Unit | | | | |
| ns32082 | National Semiconductor NS32082 Memory Management Unit | | | | |
| ns32202 | National Semiconductor NS32202 Interrupt Control Unit | | | | |
| ns32332 | National Semiconductor NS32332 | | | | |
| ns32381 | National Semiconductor NS32381 Floating-Point Unit | | | | |
| ns32532 | National Semiconductor NS32532 | | | | |
| ns5652 | unknown INS8900 Multibus card (980305652) | 19?? | National Semiconductor | | |
| ns8lines | New Lucky 8 Lines / New Super 8 Lines (W-4) | 198? | | | |
| ns8linesa | New Lucky 8 Lines / New Super 8 Lines (W-4, Lucky97 HW) | 1985 | Yamate (bootleg) | ns8lines | ns8lines |
| ns8linew | New Lucky 8 Lines / New Super 8 Lines (F-5, Witch Bonus) | 198? | | ns8lines | ns8lines |
| ns8linewa | New Lucky 8 Lines / New Super 8 Lines (W-4, Witch Bonus) | 198? | | ns8lines | ns8lines |
| ns8linewb | New Lucky 8 Lines / New Super 8 Lines (F-5, Witch Bonus, Yamate, 1985) | 1985 | Yamate | ns8lines | ns8lines |
| ns8linewc | New Lucky 8 Lines / New Super 8 Lines (W-4, Witch Bonus, Yamate, 1988, set 1) | 1988 | Yamate | ns8lines | ns8lines |
| ns8linewd | New Lucky 8 Lines / New Super 8 Lines (W-4, Witch Bonus, Yamate, 1988, set 2) | 1988 | Yamate | ns8lines | ns8lines |
| nsc800 | National Semiconductor NSC800 | | | | |
| nsc810 | National Semiconductor NSC810 RAM-I/O-Timer | | | | |
| nsc8105 | NSC8105 | | | | |
| nscsi_bus | SCSI Bus (new) | | | | |
| nscsi_cb | SCSI callback (new) | | | | |
| nscsi_connector | SCSI Connector Abstraction (new) | | | | |
| nshort | Mephisto Nigel Short | 1993 | Hegener + Glaser | | |
| nshrz | Horizon (North Star Computers, 4MHz) | 1976 | North Star Computers | | |
| nshrz2mhz | Horizon (North Star Computers, 2MHz) | 1976 | North Star Computers | nshrz | nshrz |
| nslasher | Night Slashers (Korea Rev 1.3, DE-0397-0 PCB) | 1994 | Data East Corporation | | |
| nslasherj | Night Slashers (Japan Rev 1.2, DE-0397-0 PCB) | 1994 | Data East Corporation | nslasher | nslasher |
| nslashers | Night Slashers (Over Sea Rev 1.2, DE-0397-0 PCB) | 1994 | Data East Corporation | nslasher | nslasher |
| nslasheru | Night Slashers (US Rev 1.2, DE-0395-1 PCB) | 1994 | Data East Corporation | nslasher | nslasher |
| nsmb3 | Super Mario Bros. 3 (Nelsonic) | 1990 | Nelsonic | | |
| nsmpoker | NSM Poker (TMS9995) | 198? | NSM | | |
| nsmw | Super Mario World (Nelsonic) | 1991 | Nelsonic | | |
| nsnova | Super Nova (Novag, set 1) | 1990 | Novag Industries / Intelligent Heuristic Programming | | |
| nsnovaa | Super Nova (Novag, set 2) | 1990 | Novag Industries / Intelligent Heuristic Programming | nsnova | nsnova |
| nspirit | Ninja Spirit (World) | 1988 | Irem | | |
| nspiritj | Saigo no Nindou (Japan) | 1988 | Irem | nspirit | nspirit |
| nsplashkr | New Splash (ver. 1.4, checksum A26032A3, Korea, set 1) | 1992 | Gaelco / OMK Software (Windial license) | splash | splash |
| nsplashkra | New Splash (ver. 1.4, checksum A26032A3, Korea, set 2) | 1992 | Gaelco / OMK Software (Windial license) | splash | splash |
| nss | Nintendo Super System BIOS | 199? | Nintendo | | |
| nss_actr | Act Raiser (Nintendo Super System) | 1992 | Enix | nss | |
| nss_adam | The Addams Family (Nintendo Super System) | 1992 | Ocean | nss | |
| nss_aten | David Crane's Amazing Tennis (Nintendo Super System) | 1992 | Absolute Entertainment Inc. | nss | |
| nss_con3 | Contra 3: The Alien Wars (Nintendo Super System) | 1992 | Konami | nss | |
| nss_fzer | F-Zero (Nintendo Super System) | 1991 | Nintendo | nss | |
| nss_lwep | Lethal Weapon (Nintendo Super System) | 1992 | Ocean | nss | |
| nss_ncaa | NCAA Basketball (Nintendo Super System) | 1992 | Sculptured Software Inc. | nss | |
| nss_rob3 | Robocop 3 (Nintendo Super System) | 1992 | Ocean | nss | |
| nss_skin | Skins Game (Nintendo Super System) | 1992 | Irem | nss | |
| nss_smas | Super Mario All-Stars (Nintendo Super System) | 1993 | Nintendo | nss | |
| nss_smw | Super Mario World (Nintendo Super System) | 1991 | Nintendo | nss | |
| nss_ssoc | Super Soccer (Nintendo Super System) | 1992 | Human Inc. | nss | |
| nss_sten | Super Tennis (Nintendo Super System) | 1991 | Nintendo | nss | |
| nss_tvinterface | Novag Super System TV Interface | | | | |
| nstarfox | Star Fox (Nelsonic) | 1993 | Nelsonic | | |
| nstocker | Night Stocker (10/6/86) | 1986 | Bally/Sente | | |
| nstockera | Night Stocker (8/27/86) | 1986 | Bally/Sente | nstocker | nstocker |
| nstrphnx | New Star's Phoenix (Italian speech) | 1987 | Zaccaria | | |
| nstrphnxf | New Star's Phoenix (French speech) | 1987 | Zaccaria | nstrphnx | nstrphnx |
| nsub | N-Sub (upright) | 1980 | Sega | | |
| nsubc | N-Sub (cocktail) | 1980 | Sega | nsub | nsub |
| nsupertr3 | New Super Triv III | 1988 | Status Games | supertr3 | supertr3 |
| nsvip | Super VIP (v3.7) | 1989 | Novag Industries / Intelligent Heuristic Programming | | |
| nsvipa | Super VIP (v3.6) | 1989 | Novag Industries / Intelligent Heuristic Programming | nsvip | nsvip |
| nsvipb | Super VIP (v1.03) | 1989 | Novag Industries / Intelligent Heuristic Programming | nsvip | nsvip |
| nsvipc | Super VIP (v1.01) | 1989 | Novag Industries / Intelligent Heuristic Programming | nsvip | nsvip |
| nt7502 | Novatek NT7502 LCD Driver | | | | |
| nt7534 | NT7534 LCD Controller | | | | |
| ntcash | NtCash (set 1) | 1999 | | | |
| ntcasha | NtCash (set 2) | 1999 | | ntcash | ntcash |
| ntopstar | Mahjong Nerae! Top Star (Japan) | 1990 | Nichibutsu | | |
| ntvmys | Nittere Shiki! Mirai Yosou Studio / NTV Future Forecast Studio (Japan, Rev A) | 2000 | Sega / NTV | naomi | |
| nubsupmf | NubSup Mini Game Fan | 2020 | | | |
| nubus | NuBus | | | | |
| nubus_slot | NuBus slot | | | | |
| nudgeit | Nudge-It | 1990 | Gottlieb | | |
| nugent | Nugent | 1978 | Stern | | |
| null_modem | RS-232 Null Modem | | | | |
| numanath | Numan Athletics (World) | 1993 | Namco | | |
| numanathj | Numan Athletics (Japan) | 1993 | Namco | numanath | numanath |
| number_9_rev | Number Nine Revolution 512x32/1024x8 | | | | |
| number1 | Number One | 1996 | San Remo Games | | |
| number10 | Number Dieci (Poker) | 2000 | Playmark | | |
| number10l | Number Dieci (Lattine) | 2000 | Playmark | number10 | number10 |
| numcrash | Number Crash | 1983 | Hanshin Goraku / Peni | | |
| nummunch | Electronic Number Muncher | 1989 | VTech | | |
| nunchaku | Nunchackun | 1985 | Kaneko / Taito | ladymstr | ladymstr |
| nupogodi | Nu, pogodi! | 1983 | bootleg (Elektronika) | gnw_mmouse | gnw_mmouse |
| nuretemi | Nurete Mitaino... - Net Idol Hen (Japan) | 2000 | Nichibutsu/Love Factory | nichidvd | |
| nv2a_agp | NV2A AGP Host to PCI Bridge | | | | |
| nv2a_gpu | NVIDIA NV2A GPU | | | | |
| nv2a_host | NV2A PCI Bridge Device - Host Bridge | | | | |
| nv2a_ram | NV2A Memory Controller - SDRAM | | | | |
| nvidia_nv3_vga | nVidia NV3 VGA i/f | | | | |
| nvip | VIP (Novag) | 1987 | Novag Industries / Intelligent Heuristic Programming | | |
| nvram | NVRAM | | | | |
| nvs_machrider | Vs. Mach Rider (Endurance Course Version) | 1985 | Nintendo | | |
| nvs_machridera | Vs. Mach Rider (Fighting Course Version, set MR4-1 A) | 1985 | Nintendo | nvs_machrider | nvs_machrider |
| nvs_mightybj | Vs. Mighty Bomb Jack (Japan) | 1986 | Tecmo | | |
| nvs_platoon | Vs. Platoon | 1987 | Ocean Software Limited | | |
| nwarr | Night Warriors: Darkstalkers' Revenge (Europe 950316) | 1995 | Capcom | | |
| nwarra | Night Warriors: Darkstalkers' Revenge (Asia 950302) | 1995 | Capcom | nwarr | nwarr |
| nwarrb | Night Warriors: Darkstalkers' Revenge (Brazil 950403) | 1995 | Capcom | nwarr | nwarr |
| nwarrh | Night Warriors: Darkstalkers' Revenge (Hispanic 950403) | 1995 | Capcom | nwarr | nwarr |
| nwarru | Night Warriors: Darkstalkers' Revenge (USA 950406) | 1995 | Capcom | nwarr | nwarr |
| nwarrud | Night Warriors: Darkstalkers' Revenge (USA 950406 Phoenix Edition) (bootleg) | 1995 | bootleg | nwarr | nwarr |
| nws1250 | NWS-1250 | 1990 | Sony | | |
| nws1580 | NWS-1580 | 1988 | Sony | | |
| nws3260 | NWS-3260 | 1991 | Sony | | |
| nws3410 | NWS-3410 | 1991 | Sony | | |
| nws3720 | NWS-3720 | 1991 | Sony | | |
| nws3860 | NWS-3860 | 1989 | Sony | | |
| nws5000x | NET WORK STATION NWS-5000X | 1994 | Sony | | |
| nws831 | NWS-831 | 1987 | Sony | | |
| nxm3301 | XM-3301TA CD-ROM (New) | | | | |
| nxm5301sun | XM-5301B Sun 4x CD-ROM (New) | | | | |
| nxm5401 | XM-5401B 4x CD-ROM (New) | | | | |
| nxm5401sun | XM-5401B Sun 4x CD-ROM (New) | | | | |
| nxm5701 | XM-5701B 12x CD-ROM (New) | | | | |
| nxm5701sun | XM-5701B Sun 12x CD-ROM (New) | | | | |
| nyanpani | Nyan Nyan Panic (Japan) | 1988 | Konami | kittenk | kittenk |
| nycaptor | N.Y. Captor (rev 2) | 1985 | Taito | | |
| nyjoker | New York Joker | 2000 | High Video | | |
| nyny | New York! New York! | 1980 | Sigma Enterprises Inc. | | |
| nynyg | New York! New York! (Gottlieb) | 1980 | Sigma Enterprises Inc. (Gottlieb license) | nyny | nyny |
| nytsudo | The New York Times Sudoku | 200? | Excalibur Electronics / Nice Code | | |
| nzeroteam | New Zero Team (V33 SYSTEM TYPE_B hardware) | 1997 | Seibu Kaihatsu | zeroteam | zeroteam |
| nzeroteama | New Zero Team (V33 SYSTEM TYPE_B hardware, Zhongguo Shantou Yihuang license) | 1997 | Seibu Kaihatsu (Zhongguo Shantou Yihuang license) | zeroteam | zeroteam |
| nzeroteamb | New Zero Team (V33 SYSTEM TYPE_B hardware, Haoyunlai Trading Company license) | 1997 | Seibu Kaihatsu (Haoyunlai Trading Company license) | zeroteam | zeroteam |
| o2 | O2 | 1996 | Silicon Graphics Inc. | | |
| o2_4in1 | Videopac 40 Cartridge | | | | |
| o2_cart_slot | Odyssey 2 Cartridge Slot | | | | |
| o2_chess | Videopac C7010 Cartridge | | | | |
| o2_homecomp | Videopac+ C7420 Cartridge | | | | |
| o2_ktaa | Videopac+ KTAA Cartridge | | | | |
| o2_rally | Videopac+ 60 Cartridge | | | | |
| o2_rom | Odyssey 2 Standard Cartridge | | | | |
| o2_test | Videopac Service Test Cartridge | | | | |
| o2_testpl | Videopac+ Service Test Cartridge | | | | |
| o2_voice | Odyssey 2 The Voice Cartridge | | | | |
| o286foxii | Fox II | 198? | Octek | ibm5170 | ibm5170 |
| oa_d34v | Apple/Sony 3.5 SD (400K GCR) | | | | |
| ob68k1a | OB68K1A Single Board Computer | 1982 | Omnibyte | | |
| ob8 | OB8 | 1983 | Oberheim | | |
| obaoba | Oba-Oba (set 1) | 1980 | Taito do Brasil | | |
| obaoba1 | Oba-Oba (set 2) | 1980 | Taito do Brasil | obaoba | obaoba |
| obaobao | Oba-Oba (old hardware) | 1980 | Taito do Brasil | obaoba | obaoba |
| obdmx | DMX | 1980 | Oberheim | | |
| obladi | Ob-La-Di | 199? | Gaelco / Cresmatic | | |
| oc2000 | OC-2000 | 1979 | SOE | krvnjvtv | krvnjvtv |
| oceanhun | The Ocean Hunter (Revision A) | 1998 | Sega | | |
| oceanhuna | The Ocean Hunter | 1998 | Sega | oceanhun | oceanhun |
| oceanpar | Ocean Paradise (V105US) | 1999 | IGS | | |
| oceanpar101us | Ocean Paradise (V101US) | 1999 | IGS | oceanpar | oceanpar |
| ocfoxm | Fox M 286 | 1990 | Octek | ibm5170 | ibm5170 |
| ochaken | Ocha-Ken Hot Medal | 2007 | Sega | segasp | |
| ochawk | Hawk | 199? | Octek | ibm5170 | ibm5170 |
| ochipcom | Hippo COM | 199? | Octek | ibm5170 | ibm5170 |
| ochipdca2 | Hippo DCA2 | 1994 | Octek | ibm5170 | ibm5170 |
| ochipvlp | Hippo VL+ | 199? | Octek | ibm5170 | ibm5170 |
| ocjagii | Jaguar II | 1992 | Octek | ibm5170 | ibm5170 |
| ocjagv | Jaguar V v1.4 | 1992 | Octek | ibm5170 | ibm5170 |
| ocpanii | Panther II | 199? | Octek | ibm5170 | ibm5170 |
| octane | Octane (Version 6.5 Rev 4.9 05/22/03) | 1997 | Silicon Graphics Inc | | |
| octekg2 | 286 motherboard with Headland G2 chipset | 199? | Octek | ibm5170 | ibm5170 |
| octopus | LSI Octopus | 1986 | Digital Microsystems | | |
| octopus_kb | Octopus Keyboard | | | | |
| octopussy | Octopussy | 2000 | Covielsa | mastcrane | mastcrane |
| ocxt286 | XT-286 motherboard | 198? | Octek | ibm5170 | ibm5170 |
| odeontw | Odeon Twister (v1.4) | 1998 | CD Express | cubo | |
| odeontw2 | Odeon Twister 2 (v202.19) | 1998 | CD Express | cubo | |
| odin | Odin | 1985 | Peyper | | |
| odin_dlx | Odin De Luxe | 1985 | Sonic | | |
| odinp | Odin (prototype) | 1985 | Peyper | odin | odin |
| odisea | Odisea Paris-Dakar | 1987 | Peyper | | |
| odyssey | Odyssey | 1998 | Silicon Gaming | | |
| odyssey2 | Odyssey 2 (US) | 1979 | Magnavox | videopac | videopac |
| odyssey3 | Odyssey 3 Command Center (US, prototype) | 1983 | Philips | videopacp | videopacp |
| oedfight | Oedo Fight (Japan, Bloodshed version) | 1994 | Kaneko | bloodwar | bloodwar |
| oedfighta | Oedo Fight (Japan, Bloodless version) | 1994 | Kaneko | bloodwar | bloodwar |
| offensiv | Offensive (Spanish bootleg of Scramble) | 1981 | bootleg (Video Dens) | scramble | scramble |
| officeye | Office Yeo In Cheon Ha (version 1.2) | 2001 | Danbi | | |
| offroad | Ironman Ivan Stewart's Super Off-Road (rev 4) | 1989 | Leland Corporation | | |
| offroad3 | Ironman Ivan Stewart's Super Off-Road (rev 3) | 1989 | Leland Corporation | offroad | offroad |
| offroadc | Off Road Challenge (v1.63) | 1997 | Midway | | |
| offroadc0 | Off Road Challenge (v1.00) | 1997 | Midway | offroadc | offroadc |
| offroadc1 | Off Road Challenge (v1.10) | 1997 | Midway | offroadc | offroadc |
| offroadc3 | Off Road Challenge (v1.30) | 1997 | Midway | offroadc | offroadc |
| offroadc4 | Off Road Challenge (v1.40) | 1997 | Midway | offroadc | offroadc |
| offroadc5 | Off Road Challenge (v1.50) | 1997 | Midway | offroadc | offroadc |
| offroadt | Ironman Ivan Stewart's Super Off-Road Track-Pak (rev 4?) | 1989 | Leland Corporation | | |
| offroadt2p | Ironman Ivan Stewart's Super Off-Road Track-Pak (rev 4, 2 players) | 1989 | Leland Corporation | offroadt | offroadt |
| offrthnd | Offroad Thunder | 2000 | Midway Games | | |
| offtwall | Off the Wall (2/3-player upright) | 1991 | Atari Games | | |
| offtwallc | Off the Wall (2-player cocktail) | 1991 | Atari Games | offtwall | offtwall |
| ogonsiro | Ougon no Shiro (Japan) | 1986 | Allumer / Taito Corporation | gladiatr | gladiatr |
| ohare | Apple O'Hare PCI I/O ASIC | | | | |
| ohbakyuun | Oh! Bakyuuun (Japan, OB1/VER.A) | 1999 | Eighting / Raizing / Namco | ghlpanic | ghlpanic |
| ohci_gc | OHCI Game Controller | | | | |
| ohci_hlean2131qc | OHCI an2131qc HLE | | | | |
| ohci_hlean2131sc | OHCI an2131sc HLE | | | | |
| ohmygod | Oh My God! (Japan) | 1993 | Atlus | | |
| ohpaipee | Oh! Paipee (Japan 890227) | 1989 | Nichibutsu | | |
| oigas | Oigas (bootleg) | 1986 | bootleg | gigas | gigas |
| oinori | Oinori-daimyoujin Matsuri | 2003 | Sega | naomi | |
| oisipuzl | Oishii Puzzle Ha Irimasenka | 1993 | Sunsoft / Atlus | | |
| ojanko2 | Ojanko Yakata 2bankan (Japan) | 1987 | V-System Co. | | |
| ojankoc | Ojanko Club (Japan, Program Ver. 1.3, set 1) | 1986 | V-System Co. | | |
| ojankoca | Ojanko Club (Japan, Program Ver. 1.2) | 1986 | V-System Co. | ojankoc | ojankoc |
| ojankocb | Ojanko Club (Japan, Program Ver. 1.3, set 2) | 1986 | V-System Co. | ojankoc | ojankoc |
| ojankohs | Ojanko High School (Japan) | 1988 | V-System Co. | | |
| ojankoy | Ojanko Yakata (Japan) | 1986 | V-System Co. | | |
| ojousan | Ojousan (Japan 871204) | 1987 | Nichibutsu | | |
| ojousanm | Ojousan (Japan 870108, medal) | 1987 | Nichibutsu | ojousan | ojousan |
| okean240 | Okeah-240 | 1986 | | | |
| okean240a | Ocean-240 with FDD | 1986 | | okean240 | okean240 |
| okean240t | Ocean-240 Test ROM | 1986 | | okean240 | okean240 |
| okhota | Okhota | 1989 | bootleg (Elektronika) | gnw_mmouse | gnw_mmouse |
| okim6258 | OKI MSM6258 ADPCM | | | | |
| okim6295 | OKI MSM6295 ADPCM | | | | |
| okim6376 | OKI MSM6376 ADPCM | | | | |
| okim6588 | OKI MSM6588 ADPCM Recorder | | | | |
| okim6650 | OKI MSM6650 ADPCM | | | | |
| okim9810 | OKI MSM9810 ADPCM | | | | |
| olds | Oriental Legend Super / Xiyou Shi E Zhuan Super (ver. 101, Korean Board) | 1998 | IGS | pgm | |
| olds100 | Oriental Legend Special / Xiyou Shi E Zhuan Super (ver. 100, set 1) | 1998 | IGS | olds | olds |
| olds100a | Oriental Legend Special / Xiyou Shi E Zhuan Super (ver. 100, set 2) | 1998 | IGS | olds | olds |
| olds103t | Xiyou Shi E Zhuan Super (ver. 103, China, Tencent) (unprotected) | 1998 | bootleg | olds | olds |
| oldsplus | Oriental Legend 2 (Korea) / Xiyou Shi E Zhuan Qunmoluanwu (World, China, Japan, Hong Kong, Taiwan) (ver. 205) [Oriental Ex] | 2004 | IGS | pgm | |
| oldsplus203 | Oriental Legend 2 (Korea) / Xiyou Shi E Zhuan Qunmoluanwu (World, China, Japan, Hong Kong, Taiwan) (ver. 203) [Oriental Ex] | 2004 | IGS | oldsplus | oldsplus |
| olibochu | Oli-Boo-Chu (USA) | 1981 | Irem (GDI license) | | |
| olibug | Oli Bug (bootleg of Jump Bug) | 1982 | bootleg | jumpbug | jumpbug |
| oligam | Olympian Games (Russia) | 2005 | Astro Corp. | | |
| olihockey | Olimpic Hockey (EM Bubble Hockey, set 1) | 1985 | Inor | | |
| olihockeya | Olimpic Hockey (EM Bubble Hockey, set 2) | 1985 | Inor | olihockey | olihockey |
| olim203 | M203 motherboard | 199? | Olivetti | ibm5170 | ibm5170 |
| olivm15 | M15 | 198? | Olivetti | ibm5150 | ibm5150 |
| olivpc1 | Prodest PC 1 | 1987 | Olivetti | ibm5150 | ibm5150 |
| ollie | Ollie King (GDX-0007) | 2003 | Sega / Amusement Vision | chihiro | |
| olmandingc | Olivmandingo (Spanish bootleg of Mandinga on Galaxian hardware, set 2) | 1982 | bootleg (Calfesa) | amidar | amidar |
| olmandingo | Olivmandingo (Spanish bootleg of Mandinga on Galaxian hardware, set 1) | 1982 | bootleg | amidar | amidar |
| olybossb | Olympia BOSS B | 1981 | Olympia International | olybossd | olybossd |
| olybossc | Olympia BOSS C | 1981 | Olympia International | olybossd | olybossd |
| olybossd | Olympia BOSS D | 1981 | Olympia International | | |
| olym65bj | Black Jack (Olympic Games, v5.04, upgrade kit for Wild Card) | 1989 | Olympic Video Gaming PTY LTD | | |
| olym65wc | Wild Card (Olympic Games, v2.0) | 1989 | Olympic Video Gaming PTY LTD | | |
| olymp | Olympus (Z Games, version 10) | 2000? | Z Games | | |
| olympic | Olympic Games | 1984 | Jeutel | | |
| olympic5 | Olympic 5 (V112US) | 2005 | IGS | | |
| olympic5107us | Olympic 5 (V107US) | 2003 | IGS | olympic5 | olympic5 |
| olympus | Olympus (Juegos Populares) | 1986 | Juegos Populares | | |
| olypeopl | People PC | 1983 | Olympia International | | |
| olyport40 | Olyport 40-21 | 198? | AEG Olympia | ibm5170 | ibm5170 |
| olysoc92 | Olympic Soccer '92 (set 1) | 1992 | Seibu Kaihatsu | cupsoc | cupsoc |
| olysoc92a | Olympic Soccer '92 (set 2) | 1992 | Seibu Kaihatsu | cupsoc | cupsoc |
| olysoc92b | Olympic Soccer '92 (set 3) | 1992 | Seibu Kaihatsu | cupsoc | cupsoc |
| olystar20f | Olystar 20F | 198? | AEG Olympia | ibm5150 | ibm5150 |
| olytext | Olympia Olytext 20 | 1985 | Olympia International | | |
| olytext30 | Olytext 30 | 198? | AEG Olympia | ibm5150 | ibm5150 |
| omar1 | Omar I | 1979 | Tryom | | |
| omar2 | Omar II | 1979 | Tryom | | |
| omatsuri | Shimura Ken no Bakatono-sama Ooedomatsuri | 1999 | NMK / Sega | | |
| omdisv22 | Oldsmobile Driver Information System (version 2.2 CH) | 1990? | General Motors | | |
| omega | Omega | 1986 | Nihon System | | |
| omegaa | Omega (earlier) | 1986 | Nihon System | omega | omega |
| omegab | Omega (bootleg?) | 19?? | bootleg? | theend | theend |
| omegaf | Omega Fighter | 1989 | UPL | | |
| omegafs | Omega Fighter Special | 1989 | UPL | omegaf | omegaf |
| omegrace | Omega Race (set 1) | 1981 | Midway | | |
| omegrace2 | Omega Race (set 2) | 1981 | Midway | omegrace | omegrace |
| omegrace3 | Omega Race (set 3, 7/27) | 1981 | Midway | omegrace | omegrace |
| omni | Omni | 19?? | bootleg (Videa System) | pisces | pisces |
| omni_l1 | Omni (Shuffle) (L-1) | 1980 | Williams/United | | |
| omni2 | Omni II Logic Analyzer | 198? | Kaypro Corporation | kayproii | kayproii |
| omni4 | Omni 4 Logic Analyzer | 198? | Omni Logic Inc. | kaypro484 | kaypro484 |
| omniwave | Samsung Omniwave | | | | |
| omotesnd | Omotesandou (Japan 890215) | 1989 | Anime Tec | | |
| omti_disk_image | OMTI 8621 ESDI disk | | | | |
| omti5100 | OMTI 5100 | | | | |
| omti8621ap | OMTI 8621 ESDI/floppy controller (Apollo) | | | | |
| omti8621isa | OMTI 8621 ESDI/floppy controller (ISA) | | | | |
| omv_cart_slot | Tsukuda Original Othello Multivision FG-1000 / FG-2000 Cartridge Slot | | | | |
| omv1000 | Othello Multivision FG-1000 | 1984 | Tsukuda Original | sg1000 | sg1000 |
| omv2000 | Othello Multivision FG-2000 | 1984 | Tsukuda Original | sg1000 | sg1000 |
| ondrat | Ondra | 1989 | Tesla | | |
| ondrav | Ondra ViLi | 1989 | ViLi | ondrat | ondrat |
| one4all | One For All (0101503V, New Zealand) | 2001 | Aristocrat | aristmk5 | |
| onemeg | 1 Mb Interface | | | | |
| oneshot | One Shot One Kill | 1996 | Promat | | |
| onetwo | One + Two | 1997 | Barko | | |
| onetwoe | One + Two (earlier) | 1997 | Barko | onetwo | onetwo |
| onlinertp | Onliner Touch Party | 200? | Comatel / Atata Systems | | |
| onna34ro | Onna Sanshirou - Typhoon Gal (rev 1) | 1985 | Taito | | |
| onna34roa | Onna Sanshirou - Typhoon Gal (bootleg) | 1985 | bootleg | onna34ro | onna34ro |
| onyx | Onyx (Brazil/Prototype) | 1982 | Microdigital | coleco | coleco |
| ooparts | OOPArts (prototype, joystick hack) | 1992 | hack | | |
| op386wb | OPTi 386WB VER.1.0 | 199? | OPTi | ibm5170 | ibm5170 |
| op5cards | Open 5 Cards | 1987 | MNG | | |
| op82c283 | 386sx motherboards using the OPTi 82C283 chipset | 199? | | ibm5170 | ibm5170 |
| op82c291 | 386sx motherboards using the OPTi 82C291 chipset | 199? | | ibm5170 | ibm5170 |
| op82c381 | 386 motherboards using the OPTi 82C381 chipset | 199? | | ibm5170 | ibm5170 |
| op82c391 | 386 motherboards using the OPTi 82C391 chipset | 199? | | ibm5170 | ibm5170 |
| op82c392 | 486 motherboards using the OPTi OPTi 82C392, 82C493 chipset | 199? | | ibm5170 | ibm5170 |
| opaopa | Opa Opa (MC-8123, 317-0042) | 1987 | Sega | | |
| opaopan | Opa Opa (Rev A, unprotected) | 1987 | Sega | opaopa | opaopa |
| opengolf | Konami's Open Golf Championship (ver EAE) | 1994 | Konami | konamigx | |
| opengolf2 | Konami's Open Golf Championship (ver EAD) | 1994 | Konami | opengolf | opengolf |
| openice | NHL Open Ice: 2 on 2 Challenge (rev 1.21) | 1995 | Midway | | |
| openicea | NHL Open Ice: 2 on 2 Challenge (rev 1.2A) | 1995 | Midway | openice | openice |
| openmj | Open Mahjong (Japan) | 1981? | Sapporo Mechanic | royalmj | royalmj |
| oplayer | OPlayer Mobile Game Console (MGS03-white) (Family Sport 100-in-1) | 200? | OPlayer / Senca | | |
| opsesam | Open Sesame (0351309, US) | 200? | Aristocrat | aristmk6 | |
| opthund | Operation: Thunder | 1992 | Gottlieb | | |
| opti495slc | 386 motherboards using a OPTi 82C495SLC chipset | 199? | | ibm5170 | ibm5170 |
| opti495xlc | 386 motherboards using a OPTi 82C495XLC chipset | 199? | | ibm5170 | ibm5170 |
| opti82c861 | OPTi 82C861 "FireLink" USB OHCI controller | | | | |
| optiger | Operation Tiger (Ver 2.14 O) | 1998 | Taito | | |
| optigera | Operation Tiger (Ver 2.10 O) | 1998 | Taito | optiger | optiger |
| optigerj | Operation Tiger (Ver 2.09 J) | 1998 | Taito | optiger | optiger |
| optigersm | Operation Tiger Second Mission (Ver 2.02 J) | 1998 | Taito | | |
| optomaxv | Optomax V | 1986 | AMS | | |
| opus108pm | Opus 108PM | | | | |
| opwolf | Operation Wolf (World, rev 2, set 1) | 1987 | Taito Corporation Japan | | |
| opwolf3 | Operation Wolf 3 (World) | 1994 | Taito Corporation Japan | | |
| opwolf3j | Operation Wolf 3 (Japan) | 1994 | Taito Corporation | opwolf3 | opwolf3 |
| opwolf3u | Operation Wolf 3 (US) | 1994 | Taito America Corporation | opwolf3 | opwolf3 |
| opwolfa | Operation Wolf (World, rev 2, set 2) | 1987 | Taito Corporation Japan | opwolf | opwolf |
| opwolfb | Operation Bear (bootleg of Operation Wolf) | 1987 | bootleg (Bear Corporation Korea) | opwolf | opwolf |
| opwolfj | Operation Wolf (Japan, rev 2) | 1987 | Taito Corporation | opwolf | opwolf |
| opwolfjsc | Operation Wolf (Japan, SC) | 1987 | Taito Corporation | opwolf | opwolf |
| opwolfp | Operation Wolf (Japan, prototype) | 1987 | Taito Corporation | opwolf | opwolf |
| opwolfu | Operation Wolf (US, rev 2) | 1987 | Taito America Corporation | opwolf | opwolf |
| orangec | Orange Club - Maruhi Kagai Jugyou (Japan 880213) | 1988 | Daiichi Denshi | | |
| orangeci | Orange Club - Maru-hi Ippatsu Kaihou (Japan 880221) | 1988 | Daiichi Denshi | orangec | orangec |
| orao | Orao 102 | 1984 | PEL Varazdin | | |
| orao103 | Orao 103 | 1985 | PEL Varazdin | orao | orao |
| orbatak | Orbatak (prototype) | 1995 | American Laser Games | 3dobios | |
| orbeaut | Oriental Beauty (10213511, NSW/ACT) | 2006 | Aristocrat | aristmk6 | |
| orbit | Orbit | 1978 | Atari | | |
| orbit1 | Orbit 1 | 1978 | Hankin | | |
| orbit9090 | Orbit 9090 - The Dance Planet | 1996 | E-mu Systems | | |
| orbite | Orbite (prototype) | 1979? | Model Racing | | |
| orbitor1 | Orbitor 1 | 1982 | Stern | | |
| orbitron | Orbitron | 1982 | Comsoft (Signatron USA license) | | |
| orbituvi | UVI Compu-Game | 198? | Orbit Electronics | | |
| orbs | Orbs (10/7/94 prototype?) | 1994 | American Sammy | | |
| orca_ovg_40c | Orca OVG 40c video PCB | | | | |
| orchidms | Orchid Mist (0200849V, NSW/ACT) | 1999 | Aristocrat | aristmk5 | |
| orchidmsa | Orchid Mist (0100849V, NSW/ACT) | 1999 | Aristocrat | orchidms | orchidms |
| orchidmsnz | Orchid Mist (0101241V, New Zealand) | 2000 | Aristocrat | orchidms | orchidms |
| ordentv | Ordenador-TV (Spain) | 2007 | Taikee / V-Tac | | |
| ordisava | Ordisavant (France) | 1988 | Video Technology / Yeno | | |
| ordyne | Ordyne (World) | 1988 | Namco | | |
| ordynej | Ordyne (Japan) | 1988 | Namco | ordyne | ordyne |
| ordyneje | Ordyne (Japan, English Version) | 1988 | Namco | ordyne | ordyne |
| oric_jasmin | Jasmin floppy drive interface | | | | |
| oric_microdisc | Microdisc floppy drive interface | | | | |
| oric1 | Oric-1 | 1983 | Tangerine | | |
| orica | Oric Atmos | 1984 | Tangerine | oric1 | oric1 |
| oricext_connector | ORIC extension connector | | | | |
| orion128 | Orion 128 | 1990 | | | |
| orionide | Orion 128 + Z80 Card II + IDE | 1990 | | orion128 | orion128 |
| orionidm | Orion 128 + Z80 Card II + IDE (MS7007) | 1990 | | orion128 | orion128 |
| orionms | Orion 128 (MS7007) | 1990 | | orion128 | orion128 |
| orionpro | Orion Pro | 1994 | | orion128 | orion128 |
| orionz80 | Orion 128 + Z80 Card II | 1990 | | orion128 | orion128 |
| orionzms | Orion 128 + Z80 Card II (MS7007) | 1990 | | orion128 | orion128 |
| orius | Orius (ver UAA) | 1991 | Konami | xexex | xexex |
| orizon | Orizon-Micro | 199? | | spectrum | spectrum |
| orleg2 | Oriental Legend 2 (V104, Oversea) | 2007 | IGS | | |
| orleg2_101 | Oriental Legend 2 (V101, Oversea) | 2007 | IGS | orleg2 | orleg2 |
| orleg2_101cn | Xiyou Shi E Zhuan 2 (V101, China) | 2007 | IGS (Huatong license) | orleg2 | orleg2 |
| orleg2_101jp | Saiyuu Shakuyakuden 2 (V101, Japan) | 2007 | IGS (Alta license) | orleg2 | orleg2 |
| orleg2_103 | Oriental Legend 2 (V103, Oversea) | 2007 | IGS | orleg2 | orleg2 |
| orleg2_103cn | Xiyou Shi E Zhuan 2 (V103, China) | 2007 | IGS (Huatong license) | orleg2 | orleg2 |
| orleg2_103jp | Saiyuu Shakuyakuden 2 (V103, Japan) | 2007 | IGS (Alta license) | orleg2 | orleg2 |
| orleg2_104cn | Xiyou Shi E Zhuan 2 (V104, China) | 2007 | IGS (Huatong license) | orleg2 | orleg2 |
| orleg2_104jp | Saiyuu Shakuyakuden 2 (V104, Japan) | 2007 | IGS (Alta license) | orleg2 | orleg2 |
| orlegend | Oriental Legend / Xiyou Shi E Zhuan (ver. 126) | 1997 | IGS | pgm | |
| orlegend105k | Oriental Legend / Xiyou Shi E Zhuan (ver. 105, Korean Board) | 1997 | IGS | orlegend | orlegend |
| orlegend105t | Oriental Legend / Xiyou Shi E Zhuan (ver. 105, Taiwanese Board) | 1997 | IGS | orlegend | orlegend |
| orlegend111c | Oriental Legend / Xiyou Shi E Zhuan (ver. 111, Chinese Board) | 1997 | IGS | orlegend | orlegend |
| orlegend111k | Oriental Legend / Xiyou Shi E Zhuan (ver. 111, Korean Board) | 1997 | IGS | orlegend | orlegend |
| orlegend111t | Oriental Legend / Xiyou Shi E Zhuan (ver. 111, Taiwanese Board) | 1997 | IGS | orlegend | orlegend |
| orlegendc | Oriental Legend / Xiyou Shi E Zhuan (ver. 112, Chinese Board) | 1997 | IGS | orlegend | orlegend |
| orlegendca | Oriental Legend / Xiyou Shi E Zhuan (ver. ???, Chinese Board) | 1997 | IGS | orlegend | orlegend |
| orlegende | Oriental Legend / Xiyou Shi E Zhuan (ver. 112) | 1997 | IGS | orlegend | orlegend |
| ormatu | Ormatu 2001 | 198? | Ormatu Electronics | | |
| orunners | OutRunners (World) | 1992 | Sega | | |
| orunnersj | OutRunners (Japan) | 1992 | Sega | orunners | orunners |
| orunnersu | OutRunners (US) | 1992 | Sega | orunners | orunners |
| os214 | Rabbit Printer (model OS-214) | 1996 | Argox | | |
| osa_analyst | Saitek OSA Analyst | | | osa_maestro | |
| osa_maestro | Saitek OSA Maestro B-D | | | | |
| osa_maestroa | Saitek OSA Maestro A | | | | |
| osa_sparc | Saitek OSA Sparc | | | | |
| osbexec | Executive | 1982 | Osborne | | |
| osborne1 | Osborne-1 | 1981 | Osborne | | |
| osborne1nv | Osborne-1 (Nuevo Video) | 1984 | Osborne/Nuevo | osborne1 | osborne1 |
| osborne1sp | Osborne-1 with SCREEN-PAC | 1983 | Osborne | osborne1 | osborne1 |
| osc1000b | OSCOM 1000B | 1977 | OSCOM Oy | tmc1800 | tmc1800 |
| oscar | Psycho-Nics Oscar (World revision 0) | 1987 | Data East Corporation | | |
| oscara5 | Oscar (0200348V, NSW/ACT) | 1996 | Aristocrat | aristmk5 | |
| oscara5a | Oscar (0100348V, NSW/ACT) | 1996 | Aristocrat | oscara5 | oscara5 |
| oscarbl | Psycho-Nics Oscar (World revision 0, bootleg) | 1987 | bootleg | oscar | oscar |
| oscarj1 | Psycho-Nics Oscar (Japan revision 1) | 1987 | Data East Corporation | oscar | oscar |
| oscarj2 | Psycho-Nics Oscar (Japan revision 2) | 1987 | Data East Corporation | oscar | oscar |
| oscaru | Psycho-Nics Oscar (US) | 1988 | Data East USA | oscar | oscar |
| osman | Osman (World) | 1996 | Mitchell | | |
| otatidai | Disco Mahjong Otachidai no Okite (Japan) | 1995 | Sphinx | | |
| otchart | Off The Charts (Russian) | 2000 | WMS | | |
| otenamhf | Otenami Haiken Final (V2.07JC 2005/04/20 15:36) | 2005 | Success / Warashi | coh3002t | |
| otenamih | Otenami Haiken (V2.04J 1999/02/01 18:00:00) | 1999 | Success | coh3002t | |
| otenki | Otenki Kororin (V2.01J 2001/07/02 10:00) | 2001 | Takumi | coh3002t | |
| othello | Othello (version 3.0) | 1984 | Success | | |
| othellos | Othello Shiyouyo (J 980423 V1.002) | 1998 | Success | stvbios | |
| othldrby | Othello Derby (Japan) | 1995 | Sunwise | | |
| othunder | Operation Thunderbolt (World, rev 1) | 1988 | Taito Corporation Japan | | |
| othunderj | Operation Thunderbolt (Japan) | 1988 | Taito Corporation | othunder | othunder |
| othunderjsc | Operation Thunderbolt (Japan, SC) | 1988 | Taito Corporation | othunder | othunder |
| othundero | Operation Thunderbolt (World) | 1988 | Taito Corporation Japan | othunder | othunder |
| othunderu | Operation Thunderbolt (US, rev 1) | 1988 | Taito America Corporation | othunder | othunder |
| othunderua | Operation Thunderbolt (US) | 1988 | Taito America Corporation | othunder | othunder |
| oti111_vga | Oak Technologies Spitfire 64111 i/f | | | | |
| oti64111_pci | OTI-64111 "Spitfire" | | | | |
| otomedius | Otomedius (ver GGG:J:A:A:2008041801) | 2007 | Konami | | |
| otonano | Otona no Mahjong (Japan 880628) | 1988 | Apple | | |
| otrail | The Oregon Trail | 2017 | Basic Fun | | |
| otrigger | OutTrigger | 1999 | Sega | naomi | |
| otwalls | Off the Wall (Sente) (10/16/84) | 1984 | Bally/Sente | | |
| ougonhai | Mahjong Ougon no Pai (Japan) | 1991 | Dynax | | |
| ougonhaib1 | Mahjong Ougon no Pai (Japan bootleg set 1, medal) | 1991 | bootleg | ougonhai | ougonhai |
| ougonhaib2 | Mahjong Ougon no Pai (Japan bootleg set 2, medal) | 1991 | bootleg | ougonhai | ougonhai |
| ougonhaib3 | Mahjong Ougon no Pai (Japan bootleg set 3, medal) | 1991 | bootleg | ougonhai | ougonhai |
| ouipdc | Oui-Oui - Pocket Dream Console (VideoJet, France) | 2008 | Conny / VideoJet | | |
| outbackj | Outback Jack (20195211, NSW/ACT) | 2005 | Aristocrat | aristmk6 | |
| outfxies | The Outfoxies (World, OU2) | 1994 | Namco | | |
| outfxiesa | The Outfoxies (Korea?) | 1994 | Namco | outfxies | outfxies |
| outfxiesj | The Outfoxies (Japan, OU1) | 1994 | Namco | outfxies | outfxies |
| outfxiesja | The Outfoxies (Japan, OU1, alternate GFX ROMs) | 1994 | Namco | outfxies | outfxies |
| outlaw | Outlaw | 1976 | Atari | | |
| outline | Outline | 1982 | Century Electronics | radarzon | radarzon |
| output_latch | Output Latch | | | | |
| outr2 | OutRun 2 (Rev A) (GDX-0004A) | 2003 | Sega | chihiro | |
| outr2sdx | OutRun 2 SP SDX | 2006 | Sega | lindbios | |
| outr2st | OutRun 2 Special Tours (Rev A) (GDX-0014A) | 2004 | Sega | chihiro | |
| outr2stj | OutRun 2 Special Tours (Japan, Rev A) (GDX-0011A) | 2004 | Sega | outr2st | outr2st |
| outr2stjo | OutRun 2 Special Tours (Japan) (GDX-0011) | 2004 | Sega | outr2st | outr2st |
| outr2sto | OutRun 2 Special Tours (GDX-0014) | 2004 | Sega | outr2st | outr2st |
| outrun | Out Run (sitdown/upright, Rev B) | 1986 | Sega | | |
| outrunb | Out Run (bootleg) | 1986 | bootleg | outrun | outrun |
| outrundx | Out Run (deluxe sitdown) | 1986 | Sega | outrun | outrun |
| outrundxa | Out Run (deluxe sitdown earlier version) | 1986 | Sega | outrun | outrun |
| outrundxeh | Out Run (deluxe sitdown) (Enhanced Edition v2.0.3) | 2020 | hack (Chris White) | outrun | outrun |
| outrundxeha | Out Run (deluxe sitdown) (Enhanced Edition v1.0.3) | 2013 | hack (Chris White) | outrun | outrun |
| outrundxj | Out Run (Japan, deluxe sitdown) (FD1089A 317-0019) | 1986 | Sega | outrun | outrun |
| outruneh | Out Run (sitdown/upright, Rev B) (Enhanced Edition v2.0.3) | 2020 | hack (Chris White) | outrun | outrun |
| outruneha | Out Run (sitdown/upright, Rev B) (Enhanced Edition v1.1.0) | 2014 | hack (Chris White) | outrun | outrun |
| outrunra | Out Run (sitdown/upright, Rev A) | 1986 | Sega | outrun | outrun |
| outzone | Out Zone | 1990 | Toaplan | | |
| outzonea | Out Zone (old set) | 1990 | Toaplan | outzone | outzone |
| outzoneb | Out Zone (older set) | 1990 | Toaplan | outzone | outzone |
| outzonec | Out Zone (oldest set) | 1990 | Toaplan | outzone | outzone |
| outzonecv | Out Zone (Zero Wing TP-015 PCB conversion) | 1990 | Toaplan | outzone | outzone |
| outzoneh | Out Zone (harder) | 1990 | Toaplan | outzone | outzone |
| overdriv | Over Drive (set 1) | 1990 | Konami | | |
| overdriva | Over Drive (set 2) | 1990 | Konami | overdriv | overdriv |
| overdrivb | Over Drive (set 3) | 1990 | Konami | overdriv | overdriv |
| overrev | Over Rev (Model 2C, Revision A) | 1997 | Jaleco | | |
| overrevb | Over Rev (Model 2B, Revision B) | 1997 | Jaleco | overrev | overrev |
| overrevba | Over Rev (Model 2B, Revision A) | 1997 | Jaleco | overrev | overrev |
| overtop | Over Top | 1996 | ADK | neogeo | |
| owlcap | Owl Capone (10008711, NSW/ACT, Show Program) | 2001 | Aristocrat | aristmk6 | |
| oygt | Omatsuri Yasan: Ganso Takoyaki | 2009 | Cave | | |
| oyks | Omatsuri Yasan: Kingyo Sukui | 2009 | Cave | fstgfish | fstgfish |
| oz750 | Wizard OZ-750 | 199? | Sharp | | |
| ozmawars | Ozma Wars (set 1) | 1979 | SNK | | |
| ozmawars2 | Ozma Wars (set 2) | 1979 | SNK | ozmawars | ozmawars |
| ozmawars3 | Ozma Wars (set 3) | 1979 | SNK | ozmawars | ozmawars |
| ozmawarsmr | Ozma Wars (Model Racing bootleg) | 1979 | bootleg (Model Racing) | ozmawars | ozmawars |
| ozon1 | Ozon I | 1983 | Proma | | |
| p1_fdc | Poisk-1 floppy B504 | | | | |
| p1_hdc | Poisk-1 MFM disk B942 | | | | |
| p1_rom | Poisk-1 ROM cart | | | | |
| p1_sound | Poisk-1 sound card (B623) | | | | |
| p112 | P112 | 1996 | Dave Brooks | | |
| p2000m | Philips P2000M | 1980 | Philips | p2000t | p2000t |
| p2000t | Philips P2000T | 1980 | Philips | | |
| p386dx40 | P386DX-40 | 199? | Peacock | ibm5170 | ibm5170 |
| p386sx25pw | P386SX-25PW VER:2.00 | 199? | Prolink | ibm5170 | ibm5170 |
| p47 | P-47: The Phantom Fighter (World) | 1988 | Jaleco | | |
| p47a | P-47: The Freedom Fighter (World) | 1988 | Jaleco | p47 | p47 |
| p47aces | P-47 Aces (ver 1.1) | 1995 | Jaleco | | |
| p47acesa | P-47 Aces (ver 1.0) | 1995 | Jaleco | p47aces | p47aces |
| p47bl | P-47: The Freedom Fighter (World, bootleg) | 1988 | bootleg | p47 | p47 |
| p47j | P-47: The Freedom Fighter (Japan) | 1988 | Jaleco | p47 | p47 |
| p47je | P-47: The Freedom Fighter (Japan, Export) | 1988 | Jaleco | p47 | p47 |
| p500 | P500 (NTSC) | 1983 | Commodore Business Machines | | |
| p500p | P500 (PAL) | 1983 | Commodore Business Machines | p500 | p500 |
| p5txla | P5TX-LA (i430TX) | 1997 | ECS | | |
| p72 | NEC PinWriter P72 | | | | |
| p8000 | P8000 (8bit Board) | 1989 | EAW electronic Treptow | | |
| p8000_16 | P8000 (16bit Board) | 1989 | EAW electronic Treptow | p8000 | p8000 |
| p8098 | Intel P8098 | | | | |
| p80c552 | Philips P80C552 | | | | |
| p80c562 | Philips P80C562 | | | | |
| p8798 | Intel P8798 | | | | |
| p87c552 | Philips P87C552 | | | | |
| p8k_16_daisy | P8000 16-bit daisy chain device | | | | |
| p911 | The Keisatsukan: Shinjuku 24-ji (ver AAE) | 2000 | Konami | kviper | |
| p9112 | Police 911 2 (VER. UAA:B) | 2001 | Konami | kviper | |
| p911ac | The Keisatsukan: Shinjuku 24-ji (ver AAC) | 2000 | Konami | p911 | p911 |
| p911ed | Police 24/7 (ver EAD) | 2000 | Konami | p911 | p911 |
| p911j | The Keisatsukan: Shinjuku 24-ji (ver JAE) | 2000 | Konami | p911 | p911 |
| p911k | The Keisatsukan: Shinjuku 24-ji (ver KAE) | 2000 | Konami | p911 | p911 |
| p911kc | The Keisatsukan: Shinjuku 24-ji (ver KAC) | 2000 | Konami | p911 | p911 |
| p911ud | Police 911 (ver UAD) | 2000 | Konami | p911 | p911 |
| pa7234 | PA7234 Pasopia PAC2 Expansion Unit | | | | |
| pa7243 | PA7243 Pasopia RAM PAC2 (16KB) | | | | |
| pa7245 | PA7245 Pasopia RAM PAC2 (32KB) | | | | |
| pa7246 | PA7246 Pasopia Kanji ROM PAC2 | | | | |
| pa7248 | PA7248 Pasopia RAM PAC2 (64KB) | | | | |
| pabball | Pro-Action Electronic-Computerized Baseball | 1979 | Calfax / Caprice Electronics | | |
| pac90 | Pac-Man (bootleg on World Cup '90 hardware) | 199? | bootleg (Macro) | puckman | puckman |
| pacapp | Paca Paca Passion (Japan, PPP1/VER.A2) | 1998 | Produce / Namco | | |
| pacapp2 | Paca Paca Passion 2 (Japan, PKS1/VER.A) | 1999 | Produce / Namco | | |
| pacappsp | Paca Paca Passion Special (Japan, PSP1/VER.A) | 1999 | Produce / Namco | | |
| paccarn | Pac-Carnival | 1996 | Namco | | |
| paccon | Pac-Man Connect & Play (Feb 14 2012 10:46:23) | 2012 | Bandai | | |
| paceight | Pac-Eight | 1996 | Namco | | |
| pacgal | Pac-Gal (set 1) | 1981 | hack | mspacman | mspacman |
| pacgal2 | Pac-Gal (set 2) | 1981 | bootleg | mspacman | mspacman |
| pacheart | Pac-Man (Hearts) | 1981 | hack | puckman | puckman |
| pachifev | Pachifever | 1983 | Sanki Denshi Kogyo | | |
| pachiten | Medal Mahjong Pachi-Slot Tengoku (Japan) | 1993 | Nichibutsu / AV Japan / Miki Syouji | | |
| packbang | Pack'n Bang Bang | 1994 | Kaneko | | |
| packbangp | Pack'n Bang Bang (prototype) | 1994 | Kaneko | packbang | packbang |
| packmon | Packri Monster | 1981 | Bandai | | |
| packysts | Packy's Treasure Slot (Japan, main ver. 1.3, video ver. 1.1) | 1997 | Taito Corporation | | |
| pacland | Pac-Land (World) | 1984 | Namco | | |
| paclandj | Pac-Land (Japan new) | 1984 | Namco | pacland | pacland |
| paclandjo | Pac-Land (Japan old) | 1984 | Namco | pacland | pacland |
| paclandjo2 | Pac-Land (Japan older) | 1984 | Namco | pacland | pacland |
| paclandm | Pac-Land (Midway) | 1984 | Namco (Bally Midway license) | pacland | pacland |
| paclandm2 | Pac-Land (Bally-Midway) | 1984 | Namco (Bally Midway license) | pacland | pacland |
| paclandp | Pac-Land (United Amusements PC Engine) | 1989 | Namco | | |
| pacman | Pac-Man (Midway) | 1980 | Namco (Midway license) | puckman | puckman |
| pacmanbl | Pac-Man (bootleg on Galaxian hardware, set 1) | 1981 | bootleg | puckman | puckman |
| pacmanbla | Pac-Man (bootleg on Galaxian hardware, set 2) | 1981 | bootleg | puckman | puckman |
| pacmanblb | Pac-Man (bootleg on Moon Alien 'AL-10A1' hardware) | 1981 | bootleg | puckman | puckman |
| pacmanblc | Pac-Man (Calfesa, Spanish bootleg on Galaxian hardware) | 1981 | bootleg (Calfesa) | puckman | puckman |
| pacmanblci | Pac-Man (Cirsa, Spanish bootleg on Galaxian hardware) | 1981 | bootleg (Cirsa) | puckman | puckman |
| pacmanblv | Pac-Man (Video Dens, Spanish bootleg on Galaxian hardware, set 1) | 1981 | bootleg (Video Dens) | puckman | puckman |
| pacmanblva | Pac-Man (Video Dens, Spanish bootleg on Galaxian hardware, set 2) | 1981 | bootleg (Video Dens) | puckman | puckman |
| pacmanf | Pac-Man (Midway, speedup hack) | 1980 | hack | puckman | puckman |
| pacmanfm | Pac Man (FAMARE S.A. bootleg of Puck Man) | 1980 | bootleg (FAMARE S.A.) | puckman | puckman |
| pacmania | Pac-Mania | 1987 | Namco | | |
| pacmaniaj | Pac-Mania (Japan) | 1987 | Namco | pacmania | pacmania |
| pacmaniao | Pac-Mania (111187 sound program) | 1987 | Namco | pacmania | pacmania |
| pacmanjpm | Pac-Man (JPM bootleg) | 1981 | bootleg (JPM) | puckman | puckman |
| pacmanmr | Pac-Man (Model Racing bootleg) | 1981 | bootleg (Model Racing) | puckman | puckman |
| pacmanpe | Come Come (Petaco SA bootleg of Puck Man) | 1980 | bootleg (Petaco SA) | puckman | puckman |
| pacmanso | Pac-Man (SegaSA / Sonic) | 1980 | Namco (Sonic license) | puckman | puckman |
| pacmansp | Puck Man (Spanish, 'Made in Greece' bootleg) | 198? | bootleg (Video Game SA) | puckman | puckman |
| pacmanug | Pac Man (U.Games bootleg of Puck Man) | 1980 | bootleg (U.Games) | puckman | puckman |
| pacmanvg | Pac-Man (Video Game SA bootleg) | 1980 | bootleg (Video Game SA) | puckman | puckman |
| pacmball | Pacman BALL (PMB2 Ver.A.) | 2003 | Namco | | |
| pacmod | Pac-Man (Midway, harder) | 1981 | Namco (Midway license) | puckman | puckman |
