| Name | Description | Year | Manufacturer | Rom of | Clone of |
|---|
| wldwitchj | Wild Witch (Export, 6T/12T ver 1.65A-S alt) | 1996 | Video Klein | wldwitch | wldwitch |
| wldwitchk | Wild Witch (Export, 6T/12T ver 1.65A-N) | 1996 | Video Klein | wldwitch | wldwitch |
| wldwitchl | Wild Witch (Export, 6T/12T ver 1.70A beta) | 1996 | Video Klein | wldwitch | wldwitch |
| wldwitchm | Wild Witch (Export, 6T/12T ver 1.70A) | 1996 | Video Klein | wldwitch | wldwitch |
| wldwitchn | Wild Witch (Export, 6T/12T ver 1.70A alt) | 1997 | Video Klein | wldwitch | wldwitch |
| wldwitcho | Wild Witch (Export, 6T/12T ver 1.74A-SP-BELG) | 1998 | Video Klein | wldwitch | wldwitch |
| wldwitchp | Wild Witch (Export, 6T/12T ver 1.74A) | 1998 | Video Klein | wldwitch | wldwitch |
| wldwitchq | Wild Witch (Export, 6T/12T ver 1.74A alt) | 1998 | Video Klein | wldwitch | wldwitch |
| wldwitchr | Wild Witch (Export, 6B/12B ver 1.75A-E English) | 1999 | Video Klein | wldwitch | wldwitch |
| wldwitchs | Wild Witch (Export, 6T/12T ver 1.76A) | 1999 | Video Klein | wldwitch | wldwitch |
| wldwitcht | Wild Witch (Export, 6T/12T ver 1.77A) | 1999 | Video Klein | wldwitch | wldwitch |
| wldwitchu | Wild Witch (Export, 6T/12T ver 1.79A) | 2000 | Video Klein | wldwitch | wldwitch |
| wldwitchv | Wild Witch (Export, 6T/12T ver 1.83A) | 2001 | Video Klein | wldwitch | wldwitch |
| wlsair60 | Wireless Air 60 | 2010 | Jungle Soft / Kids Station Toys Inc | | |
| wlstar | Wonder League Star - Sok-Magicball Fighting (Korea) | 1995 | Mijin | | |
| wlzb | Wu Lin Zhengba | 1999 | Huang Yeh | | |
| wmatch | Water Match (315-5064) | 1984 | Sega | | |
| wmbullet | Bullet | 1982 | Wave Mate | | |
| wmbulletf | Bullet (Revision F) | 1984 | Wave Mate | wmbullet | wmbullet |
| wmega | Wondermega (Japan, NTSC) | 1992 | Sega | xeye | xeye |
| wmegam2 | Wondermega M2 (Japan, NTSC) | 1993 | Victor | xeye | xeye |
| wmg | Williams Multigame | 2001 | hack (Clay Cowgill) | | |
| wms | WMS SetUp/Clear Chips (set 1) | 200? | WMS | | |
| wmsa | WMS SetUp/Clear Chips (set 2) | 200? | WMS | wms | wms |
| wmsadpcm | Williams ADPCM Sound Board | | | | |
| wmsb | WMS SetUp/Clear Chips (set 3) | 200? | WMS | wms | wms |
| wmsboom | Boom (Russian) | 1998 | WMS | | |
| wmscvsd | Williams CVSD Sound Board | | | | |
| wmsnarc | Williams NARC Sound Board | | | | |
| wmss11 | Williams System 11 Sound Board | | | | |
| wmss4 | Williams System 4 Sound Board | | | | |
| wmss6 | Williams System 6 Sound Board | | | | |
| wmss9 | Williams System 9 Sound Board | | | | |
| wmstopb | Top Banana (Russian) | 1999 | WMS | | |
| wndrmomo | Wonder Momo | 1987 | Namco | | |
| wndrplnt | Wonder Planet (Japan) | 1987 | Data East Corporation | | |
| wnpost | Winning Post (RHG0418-04, US) | 1997 | Aristocrat | aristmk5 | |
| wof | Warriors of Fate (World 921031) | 1992 | Capcom | | |
| wof_100a | Wheel of Fortune v1.0 | 2007 | Stern | wof_500a | wof_500a |
| wof_200a | Wheel of Fortune v2.0 | 2007 | Stern | wof_500a | wof_500a |
| wof_200f | Wheel of Fortune v2.0 (French) | 2007 | Stern | wof_500a | wof_500a |
| wof_200g | Wheel of Fortune v2.0 (German) | 2007 | Stern | wof_500a | wof_500a |
| wof_200i | Wheel of Fortune v2.0 (Italian) | 2007 | Stern | wof_500a | wof_500a |
| wof_300a | Wheel of Fortune v3.0 | 2007 | Stern | wof_500a | wof_500a |
| wof_300f | Wheel of Fortune v3.0 (French) | 2007 | Stern | wof_500a | wof_500a |
| wof_300g | Wheel of Fortune v3.0 (German) | 2007 | Stern | wof_500a | wof_500a |
| wof_300i | Wheel of Fortune v3.0 (Italian) | 2007 | Stern | wof_500a | wof_500a |
| wof_300l | Wheel of Fortune v3.0 (Spanish) | 2007 | Stern | wof_500a | wof_500a |
| wof_400a | Wheel of Fortune v4.0 | 2007 | Stern | wof_500a | wof_500a |
| wof_400f | Wheel of Fortune v4.0 (French) | 2007 | Stern | wof_500a | wof_500a |
| wof_400g | Wheel of Fortune v4.0 (German) | 2007 | Stern | wof_500a | wof_500a |
| wof_400i | Wheel of Fortune v4.0 (Italian) | 2007 | Stern | wof_500a | wof_500a |
| wof_400l | Wheel of Fortune v4.0 (Spanish) | 2007 | Stern | wof_500a | wof_500a |
| wof_500a | Wheel of Fortune v5.0 | 2007 | Stern | | |
| wof_500f | Wheel of Fortune v5.0 (French) | 2007 | Stern | wof_500a | wof_500a |
| wof_500g | Wheel of Fortune v5.0 (German) | 2007 | Stern | wof_500a | wof_500a |
| wof_500i | Wheel of Fortune v5.0 (Italian) | 2007 | Stern | wof_500a | wof_500a |
| wof_500l | Wheel of Fortune v5.0 (Spanish) | 2007 | Stern | wof_500a | wof_500a |
| wof_v11 | Wheel of Fortune (P517 V11, English) | 2000 | Coinmaster-Gaming, Ltd. | wof_v16 | wof_v16 |
| wof_v16 | Wheel of Fortune (P517 V16, English) | 2000 | Coinmaster-Gaming, Ltd. | | |
| wofa | Sangokushi II (Asia 921005) | 1992 | Capcom | wof | wof |
| wofabl | Sangokushi II (bootleg) | 1992 | bootleg | wof | wof |
| wofch | Tenchi wo Kurau II: Sekiheki no Tatakai (CPS Changer, Japan 921031) | 1994 | Capcom | | |
| wofhfh | Huo Feng Huang (Chinese bootleg of Sangokushi II) | 1999 | bootleg | wof | wof |
| wofigt | Wheel of Fortune (IGT) | 1998 | IGT | | |
| wofj | Tenchi wo Kurau II: Sekiheki no Tatakai (Japan 921031) | 1992 | Capcom | wof | wof |
| wofpic | Warriors of Fate (bootleg with PIC16C57) | 1992 | bootleg | wof | wof |
| wofr1 | Warriors of Fate (World 921002) | 1992 | Capcom | wof | wof |
| wofr1bl | Warriors of Fate (bootleg) | 1992 | bootleg | wof | wof |
| wofu | Warriors of Fate (USA 921031) | 1992 | Capcom | wof | wof |
| wolffang | Wolf Fang: Kuuga 2001 (Japan) | 1991 | Data East Corporation | rohga | rohga |
| wolfman | Wolf Man | 1987 | Peyper | | |
| wolfpack | Wolf Pack (prototype) | 1978 | Atari | | |
| wonder3 | Wonder 3 (Japan 910520) | 1991 | Capcom | 3wonders | 3wonders |
| wondl96 | Wonder League '96 (Korea) | 1996 | SemiCom | | |
| wondstck | Wonder Stick (set 1) | ???? | Yun Sung | | |
| wondstcka | Wonder Stick (set 2, censored) | ???? | Yun Sung | wondstck | wondstck |
| wontame | Won! Tertainment Happy Channel (Ver.1.00E 2008/02/21) | 2008 | Capcom / Tomy | | |
| wontmuch | Won!Tertainment Music Channel (v1.00) | 2006 | Capcom | | |
| woodpeca | Woodpecker (set 2) | 1981 | Amenip | woodpeck | woodpeck |
| woodpeck | Woodpecker (set 1) | 1981 | Amenip (Palcom Queen River) | | |
| wordlnch | Word Launch (UK) | 2007 | LeapFrog | | |
| worldadv | World Adventure | 1999 | Logic / F2 System | | |
| worlddef | World Defender | 1985 | Bell Games | | |
| worldwar | World Wars (World?) | 1987 | SNK | | |
| wotw | War of the Worlds | 1981 | Cinematronics | | |
| wotw_audio | War of the Worlds Sound Board | | | | |
| wotwc | War of the Worlds (color) | 1981 | Cinematronics | wotw | wotw |
| wow | Wizard of Wor | 1980 | Dave Nutting Associates / Midway | | |
| wowg | Wizard of Wor (with German language ROM) | 1980 | Dave Nutting Associates / Midway | wow | wow |
| wownfant | WOW New Fantasia (Explicit) | 2002 | Comad | | |
| wownfanta | WOW New Fantasia | 2002 | Comad | wownfant | wownfant |
| wowwg | Wow Wireless Gaming (PAL) | 200? | Wow | | |
| wpc | Williams WPC ASIC | | | | |
| wpc_dmd | Williams Pinball Controller Dot Matrix Display | | | | |
| wpc_lamp | Williams Pinball Controller Lamp Control | | | | |
| wpc_out | Williams Pinball Controller Output Control | | | | |
| wpc_pic | Williams Pinball Controller PIC Security | | | | |
| wpc_shift | Williams Pinball Controller Shifter | | | | |
| wpc250 | PC-250/16 | 1981 | Wang Laboratories, Inc. | ibm5170 | ibm5170 |
| wpcsnd | Williams WPC Sound | | | | |
| wpddz | Wang Pai Dou Dizhu | 2004? | SGM | | |
| wpksoc | World PK Soccer | 1995 | Jaleco | | |
| wpksocv2 | World PK Soccer V2 (ver 1.1) | 1996 | Jaleco | | |
| wpt_103a | World Poker Tour v1.03 | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_105a | World Poker Tour v1.05 | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_106a | World Poker Tour v1.06 | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_106f | World Poker Tour v1.06 (French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_106g | World Poker Tour v1.06 (German) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_106i | World Poker Tour v1.06 (Italian) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_106l | World Poker Tour v1.06 (Spanish) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_108a | World Poker Tour v1.08 | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_108f | World Poker Tour v1.08 (French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_108g | World Poker Tour v1.08 (German) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_108i | World Poker Tour v1.08 (Italian) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_108l | World Poker Tour v1.08 (Spanish) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_109a | World Poker Tour v1.09 | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_109f | World Poker Tour v1.09 (French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_109f2 | World Poker Tour v1.09 (French)(alt) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_109g | World Poker Tour v1.09 (German) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_109i | World Poker Tour v1.09 (Italian) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_109l | World Poker Tour v1.09 (Spanish) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_111a | World Poker Tour v1.11 | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_111af | World Poker Tour v1.11 (English,French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_111ai | World Poker Tour v1.11 (English,Italian) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_111al | World Poker Tour v1.11 (English,Spanish) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_111f | World Poker Tour v1.11 (French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_111g | World Poker Tour v1.11 (German) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_111gf | World Poker Tour v1.11 (German,French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_111i | World Poker Tour v1.11 (Italian) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_111l | World Poker Tour v1.11 (Spanish) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_112a | World Poker Tour v1.12 | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_112af | World Poker Tour v1.12 (English,French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_112ai | World Poker Tour v1.12 (English,Italian) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_112al | World Poker Tour v1.12 (English,Spanish) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_112f | World Poker Tour v1.12 (French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_112g | World Poker Tour v1.12 (German) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_112gf | World Poker Tour v1.12 (German,French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_112i | World Poker Tour v1.12 (Italian) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_112l | World Poker Tour v1.12 (Spanish) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_1400 | World Poker Tour v14.00 | 2006 | Stern | | |
| wpt_1400af | World Poker Tour v14.00 (English,French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_1400ai | World Poker Tour v14.00 (English,Italian) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_1400al | World Poker Tour v14.00 (English,Spanish) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_1400f | World Poker Tour v14.00 (French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_1400g | World Poker Tour v14.00 (German) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_1400gf | World Poker Tour v14.00 (German,French) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_1400i | World Poker Tour v14.00 (Italian) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wpt_1400l | World Poker Tour v14.00 (Spanish) | 2006 | Stern | wpt_1400 | wpt_1400 |
| wrally | World Rally Championship (version 1.0, checksum DE0D, 08 Nov 1993) | 1993 | Gaelco | | |
| wrally2 | World Rally 2: Twin Racing (version 20-07, checksum B1B8) | 1995 | Gaelco | | |
| wrally2a | World Rally 2: Twin Racing (version 26-06, checksum 3EDB, mask ROM version) | 1995 | Gaelco | wrally2 | wrally2 |
| wrally2b | World Rally 2: Twin Racing (version 26-06, checksum 3EDB) | 1995 | Gaelco | wrally2 | wrally2 |
| wrally2c | World Rally 2: Twin Racing (version 09-06, checksum 7BE1) | 1995 | Gaelco | wrally2 | wrally2 |
| wrally2d | World Rally 2: Twin Racing (version 09-06, checksum 50A2) | 1995 | Gaelco | wrally2 | wrally2 |
| wrallya | World Rally Championship (version 1.0, checksum E586, 25 Jun 1993) | 1993 | Gaelco | wrally | wrally |
| wrallyac | World Rally Championship (version 1.0, checksum C448) | 1993 | Gaelco (Automáticos Canarios license) | wrally | wrally |
| wrallyat | World Rally Championship (America, version 1.0, checksum 2CC1) | 1993 | Gaelco (Atari license) | wrally | wrally |
| wrallyata | World Rally Championship (America, version 1.0, checksum 75A5, 16 Jun 1993) | 1993 | Gaelco (Atari license) | wrally | wrally |
| wrallyb | World Rally Championship (version 1.0, checksum 8AA2) | 1993 | Gaelco | wrally | wrally |
| wrallyc | World Rally Championship (version 1.0, checksum 3873, 06 Apr 1993) | 1993 | Gaelco | wrally | wrally |
| wrallyd | World Rally Championship (version 1.0, checksum 0E56, 06 Apr 1993) | 1993 | Gaelco | wrally | wrally |
| wrallye | World Rally Championship (version 1.0, checksum 3D84, 02 Apr 1993) | 1993 | Gaelco | wrally | wrally |
| wrallymp | World Rallye Championship (prototype on Modular System, 23 Nov 1992) | 1992 | Gaelco | wrally | wrally |
| wrecking | Vs. Wrecking Crew | 1984 | Nintendo | | |
| wrestwar | Wrestle War (set 3, World) (8751 317-0103) | 1989 | Sega | | |
| wrestwar1 | Wrestle War (set 1, Japan) (FD1094 317-0090) | 1989 | Sega | wrestwar | wrestwar |
| wrestwar1d | Wrestle War (set 1, Japan) (bootleg of FD1094 317-0090 set) | 1989 | bootleg | wrestwar | wrestwar |
| wrestwar2 | Wrestle War (set 2, World) (FD1094 317-0102) | 1989 | Sega | wrestwar | wrestwar |
| wrestwar2d | Wrestle War (set 2, World) (bootleg of FD1094 317-0102 set) | 1989 | bootleg | wrestwar | wrestwar |
| wrinkles | Talking Wrinkles | 1986 | Lakeside / Coleco / Ganz Bros | | |
| wrldtour | Al's Garage Band Goes On A World Tour (R01c) | 1992 | Alvin G | | |
| wrldtour2 | Al's Garage Band Goes On A World Tour (R02b) | 1992 | Alvin G | wrldtour | wrldtour |
| wrldtour3 | Al's Garage Band Goes On A World Tour (R06a) | 1992 | Alvin G | wrldtour | wrldtour |
| wrlok_l3 | Warlok (L-3) | 1982 | Williams | | |
| wrlshunt | Wireless Hunting Video Game System | 2011 | Hamy / Kids Station Toys Inc | | |
| wrofaero | War of Aero - Project MEIOU | 1993 | Yang Cheng | | |
| wrungp | Wave Runner GP | 2001 | CRI / Sega | naomi | |
| wrungpo | Wave Runner GP (USA, Rev A) | 2001 | CRI / Sega | wrungp | wrungp |
| ws | Pro Yakyuu World Stadium (Japan) | 1988 | Namco | | |
| ws_cart_slot | Wonderswan Cartridge Slot | | | | |
| ws_eeprom | Wonderswan Carts w/EEPROM | | | | |
| ws_rom | Wonderswan Standard Carts | | | | |
| ws_sram | Wonderswan Carts w/SRAM | | | | |
| ws_wwitch | WonderWitch | | | | |
| ws89 | Pro Yakyuu World Stadium '89 (Japan) | 1989 | Namco | ws | ws |
| ws90 | Pro Yakyuu World Stadium '90 (Japan) | 1990 | Namco | ws | ws |
| wsbbgd | World Series Baseball / Super Major League (GDS-0010) | 2001 | Sega | naomigd | |
| wschamp | Wing Shooting Championship V2.00 | 2001 | Sammy USA Corporation | | |
| wschampa | Wing Shooting Championship V1.01 | 2001 | Sammy USA Corporation | wschamp | wschamp |
| wschampb | Wing Shooting Championship V1.00 | 2001 | Sammy USA Corporation | wschamp | wschamp |
| wscolor | WonderSwan Color | 2000 | Bandai | wswan | wswan |
| wscolor_video | Bandai WonderSwan Color VDP | | | | |
| wseries | World Series: The Season (rev 1) | 1985 | Cinematronics | | |
| wseries0 | World Series: The Season (rev 0) | 1985 | Cinematronics | wseries | wseries |
| wsf | World Soccer Finals (rev 4) | 1990 | Leland Corporation | | |
| wsf_80186_sound | 80186 DAC (WSF) | | | | |
| wsf3 | World Soccer Finals (rev 3) | 1990 | Leland Corporation | wsf | wsf |
| wsjr | Who Shot Johnny Rock? (v1.6) | 1991 | American Laser Games | alg_bios | |
| wsjr_15 | Who Shot Johnny Rock? (v1.5) | 1991 | American Laser Games | wsjr | wsjr |
| wsports | Winter Sports | 1978 | Zaccaria | | |
| wstrike | Witch Strike (Export, 6T/12T ver 1.01A) | 1992 | Video Klein | | |
| wstrikea | Witch Strike (Export, 6T/12T ver 1.01B) | 1992 | Video Klein | wstrike | wstrike |
| wswan | WonderSwan | 1999 | Bandai | | |
| wswan_sound | WonderSwan Custom Sound | | | | |
| wswan_video | Bandai WonderSwan VDP | | | | |
| wswe | World Soccer Winning Eleven Arcade Game Style | 2002 | Konami | kpython | |
| wswe2k3 | World Soccer Winning Eleven Arcade Game 2003 | 2003 | Konami | kpython | |
| wtalker | Weight Talker | 1985 | Technasonic | | |
| wtchjack | Witch Jack (Export, 6T/12T ver 0.87-89) | 1996 | Video Klein | | |
| wtchjacka | Witch Jack (Export, 6T/12T ver 0.87-88) | 1996 | Video Klein | wtchjack | wtchjack |
| wtchjackb | Witch Jack (Export, 6T/12T ver 0.87) | 1996 | Video Klein | wtchjack | wtchjack |
| wtchjackc | Witch Jack (Export, 6T/12T ver 0.70S) | 1996 | Video Klein | wtchjack | wtchjack |
| wtchjackd | Witch Jack (Export, 6T/12T ver 0.70P) | 1996 | Video Klein | wtchjack | wtchjack |
| wtchjacke | Witch Jack (Export, 6T/12T ver 0.65) | 1995 | Video Klein | wtchjack | wtchjack |
| wtchjackf | Witch Jack (Export, 6T/12T ver 0.64) | 1995 | Video Klein | wtchjack | wtchjack |
| wtchjackg | Witch Jack (Export, 6T/12T ver 0.62) | 1995 | Video Klein | wtchjack | wtchjack |
| wtchjackh | Witch Jack (Export, 6T/12T ver 0.40T) | 1995 | Video Klein | wtchjack | wtchjack |
| wtchjacki | Witch Jack (Export, 6T/12T ver 0.40) | 1995 | Video Klein | wtchjack | wtchjack |
| wtchjackj | Witch Jackpot (Export, 6T/12T ver 0.25) | 1994 | Video Klein | wtchjack | wtchjack |
| wtennis | World Tennis | 1982 | bootleg | | |
| wtepee | Wild Tepee - Power Pay (20230211, NSW/ACT) | 2007 | Aristocrat | aristmk6 | |
| wthing | Wild Thing (0101158V, NSW/ACT) | 1999 | Aristocrat | aristmk5 | |
| wthinga | Wild Thing (0201176V, NSW/ACT) | 2000 | Aristocrat | wthing | wthing |
| wtiger | White Tiger (4XF5139I08, US) | 1995 | Aristocrat | | |
| wtigerc | White Tiger Classic (0200954V, NSW/ACT) | 1999 | Aristocrat | aristmk5 | |
| wtigernz | White Tiger (3VXFC5342, New Zealand) | 1996 | Aristocrat | wtiger | wtiger |
| wtl3132 | Weitek 3132 | | | | |
| wto2840sp | Web Touch One (model 2840, Terra, Spanish) | 1999 | Alcatel | | |
| wtrnymph | Water-Nymph (Ver. 1.4) | 1996 | Subsino | | |
| wulybuly | Wully Bully | 200? | | crysbios | |
| wunitvid | Midway W-Unit Video | | | | |
| wupndown | Witch Up & Down (Export, 6T/12T ver 1.02) | 1998 | Video Klein | | |
| wupndowna | Witch Up & Down (Export, 6T/12T ver 0.99, set 1) | 1998 | Video Klein | wupndown | wupndown |
| wupndownb | Witch Up & Down (Export, 6T/12T ver 0.99, set 2) | 1998 | Video Klein | wupndown | wupndown |
| wupndownc | Witch Up & Down (Export, 6T/12T ver 0.99, set 3) | 1998 | Video Klein | wupndown | wupndown |
| wupndownd | Witch Up & Down (Export, 6T/12T ver 0.99T) | 1998 | Video Klein | wupndown | wupndown |
| ww_l2 | White Water (L-2) | 1992 | Williams | ww_l5 | ww_l5 |
| ww_l3 | White Water (L-3) | 1993 | Williams | ww_l5 | ww_l5 |
| ww_l4 | White Water (L-4) | 1993 | Williams | ww_l5 | ww_l5 |
| ww_l5 | White Water (L-5) | 2000 | Williams | | |
| ww_lh5 | White Water (LH-5) | 2000 | Williams | ww_l5 | ww_l5 |
| ww_lh6 | White Water (LH-6) | 2000 | Williams | ww_l5 | ww_l5 |
| ww_p6 | White Water (P-6) | 1992 | Williams | ww_l5 | ww_l5 |
| ww_p8 | White Water (P-8) | 1992 | Williams | ww_l5 | ww_l5 |
| ww3 | WW III | 1981 | Irem | redalert | redalert |
| wwallyj | Wally wo Sagase! (rev B, Japan, 2 players) (FD1094 317-0197B) | 1992 | Sega | | |
| wwallyja | Wally wo Sagase! (rev A, Japan, 2 players) (FD1094 317-0197A) | 1992 | Sega | wwallyj | wwallyj |
| wwallyja3p | Wally wo Sagase! (rev A, Japan, 3 players) (FD1094 317-0198A) | 1992 | Sega | wwallyj | wwallyj |
| wwallyjad | Wally wo Sagase! (rev A, Japan) (bootleg of FD1094 317-0197A set) | 1992 | bootleg | wwallyj | wwallyj |
| wwallyjd | Wally wo Sagase! (rev B, Japan) (bootleg of FD1094 317-0197B set) | 1992 | bootleg | wwallyj | wwallyj |
| wwanpanm | Waku Waku Anpanman (Rev A) | 1992 | Sega | | |
| wwanpanmo | Waku Waku Anpanman | 1992 | Sega | wwanpanm | wwanpanm |
| wwaratah | Wild Waratah (10215911, NSW/ACT) | 2006 | Aristocrat | aristmk6 | |
| wwaratahsp | Wild Waratah (10215911, NSW/ACT, Show Program) | 2006 | Aristocrat | wwaratah | wwaratah |
| wways | Wild Ways (10106911, NSW/ACT) | 2002 | Aristocrat | aristmk6 | |
| wwaysa | Wild Ways (10130111, ASP) | 2003 | Aristocrat | wways | wways |
| wwdash | Wan Wan Dash (Japan, ver 1.01) | 2007 | Amuzy Corporation | | |
| wwestern | Wild Western (set 1) | 1982 | Taito Corporation | | |
| wwestern1 | Wild Western (set 2) | 1982 | Taito Corporation | wwestern | wwestern |
| wwfmania | WWF: Wrestlemania (rev 1.30 08/10/95) | 1995 | Midway | | |
| wwfmaniab | WWF: Wrestlemania (rev 1.20 08/02/95) | 1995 | Midway | wwfmania | wwfmania |
| wwfmaniac | WWF: Wrestlemania (rev 1.1 07/11/95) | 1995 | Midway | wwfmania | wwfmania |
| wwfmaniap | WWF: Wrestlemania (proto 2.01 06/07/95) | 1995 | Midway | wwfmania | wwfmania |
| wwfr_103 | WWF Royal Rumble (USA 1.03, display A1.01) | 1994 | Data East | wwfr_106 | wwfr_106 |
| wwfr_103f | WWF Royal Rumble (French 1.03, display F1.01) | 1994 | Data East | wwfr_106 | wwfr_106 |
| wwfr_106 | WWF Royal Rumble (USA 1.06, display A1.02) | 1994 | Data East | | |
| wwfroyal | WWF Royal Rumble | 2000 | Sega | naomi | |
| wwfsstar | WWF Superstars (Europe) | 1989 | Technos Japan | | |
| wwfsstarb | WWF Superstars (bootleg) | 1989 | bootleg | wwfsstar | wwfsstar |
| wwfsstarb2 | WWF Superstars (bootleg with 2xYM2203) | 1989 | bootleg | wwfsstar | wwfsstar |
| wwfsstarc | WWF Superstars (Canada) | 1989 | Technos Japan | wwfsstar | wwfsstar |
| wwfsstarj | WWF Superstars (Japan) | 1989 | Technos Japan | wwfsstar | wwfsstar |
| wwfsstaru4 | WWF Superstars (US revision 4) | 1989 | Technos Japan | wwfsstar | wwfsstar |
| wwfsstaru6 | WWF Superstars (US revision 6) | 1989 | Technos Japan | wwfsstar | wwfsstar |
| wwfsstaru7 | WWF Superstars (US revision 7) | 1989 | Technos Japan | wwfsstar | wwfsstar |
| wwfwfest | WWF WrestleFest (World) | 1991 | Technos Japan (Tecmo license) | | |
| wwfwfestj | WWF WrestleFest (Japan) | 1991 | Technos Japan (Tecmo license) | wwfwfest | wwfwfest |
| wwfwfestk | WWF WrestleFest (Korea) | 1991 | Technos Japan (Tecmo license) | wwfwfest | wwfwfest |
| wwfwfestu | WWF WrestleFest (US, rev 2) | 1991 | Technos Japan | wwfwfest | wwfwfest |
| wwfwfestu1 | WWF WrestleFest (US) | 1991 | Technos Japan | wwfwfest | wwfwfest |
| wwfwfestub | WWF WrestleFest (US bootleg) | 1991 | bootleg | wwfwfest | wwfwfest |
| wwitch | Wicked Witch (Ver. AA.01.A) | 2005 | Astro Corp. | | |
| wwjgtin | Wai Wai Jockey Gate-In! | 1984 | Jaleco / Casio | | |
| wwmarine | Waku Waku Marine | 1992 | Sega | | |
| wwmspot | Winner's Wheel - Magical Spot | 2005 | Sega | | |
| wwshin | Waku Waku Shinkansen (J 971031 V0.002) | 1997 | Sega | stvbios | |
| wxstar4k | WeatherSTAR 4000 | 1990 | Applied Microelectronics Institute/The Weather Channel | | |
| wy100 | WY-100 | 1981 | Wyse Technology | | |
| wy100_loopback | WY-100 Printer Loopback (3 to 20) | | | | |
| wy100kb | WY-100 Keyboard | | | | |
| wy120 | WY-120 (v1.4) | 1992 | Wyse Technology | | |
| wy150 | WY-150 (v1.0) | 1991 | Wyse Technology | | |
| wy160 | WY-160 (v1.7) | 1994 | Wyse Technology | | |
| wy185es | WY-185ES (v2.0) | 1991 | Wyse Technology | | |
| wy220001 | WYSEpc 286 | 198? | Wyse | ibm5170 | ibm5170 |
| wy30_kbd | WY-30 Keyboard | | | | |
| wy30p | WY-30+ (v1.8) | 1992 | Wyse Technology | | |
| wy325 | WY-325 (v3.2) | 1994 | Wyse Technology | | |
| wy50 | WY-50 (Rev. E) | 1984 | Wyse Technology | | |
| wy50kb | WY-50 Keyboard | | | | |
| wy55 | WY-55 (v2.1) | 1993 | Wyse Technology | | |
| wy60 | WY-60 (RBFNG2) | 1986 | Wyse Technology | | |
| wy60_ascii_kbd | WY-60 ASCII Keyboard | | | | |
| wy60a | WY-60 (RBFNB0) | 1986 | Wyse Technology | wy60 | wy60 |
| wy65 | WY-65 (v2.1) | 1996 | Wyse Technology | | |
| wy75 | WY-75 (Rev. H) | 1984 | Wyse Technology | | |
| wy85 | WY-85 | 1985 | Wyse Technology | | |
| wy85_kbd | WY-85 Keyboard | | | | |
| wyse_316x_kbd | Wyse IBM 316X-Style Keyboard | | | | |
| wyse_at_kbd | Wyse AT-Style Keyboard | | | | |
| wyse_pce_kbd | Wyse Enhanced PC-Style Keyboard | | | | |
| wyse_pceint_kbd | Wyse Enhanced PC-Style International Keyboard | | | | |
| wyse700 | Wyse 700 | | | | |
| wysekbd | Wyse Keyboard Port | | | | |
| wyvernf0 | Wyvern F-0 (Rev 1) | 1985 | Taito Corporation | | |
| wyvernf0a | Wyvern F-0 | 1985 | Taito Corporation | wyvernf0 | wyvernf0 |
| wyvernwg | Wyvern Wings (set 1) | 2001 | SemiCom (Game Vision license) | wivernwg | wivernwg |
| wyvernwga | Wyvern Wings (set 2) | 2001 | SemiCom (Game Vision license) | wivernwg | wivernwg |
| wzwaysll | Wizard Ways - Lady Luck (20139121, NSW/ACT) | 2003 | Aristocrat | aristmk6 | |
| x07 | X-07 | 1983 | Canon | | |
| x1 | X1 (CZ-800C) | 1982 | Sharp | | |
| x1_001 | Seta X1-001 Sprites | | | | |
| x1_010 | Seta X1-010 | | | | |
| x1_012 | Seta X1-012 Tile Layer | | | | |
| x1_keyboard | Sharp X1 Keyboard | | | | |
| x168 | Xerox 16/8 | 1983 | Xerox | x820ii | x820ii |
| x180 | unknown Yuvo Joy Stand game (set 1) | 1997 | Yuvo | | |
| x180ii | unknown Yuvo Joy Stand game (set 2) | 1997 | Yuvo | | |
| x1turbo | X1 Turbo (CZ-850C) | 1984 | Sharp | x1 | x1 |
| x1turbo40 | X1 Turbo (CZ-862C) | 1985 | Sharp | x1 | x1 |
| x1twin | X1 Twin (CZ-830C) | 1986 | Sharp | x1 | x1 |
| x2201 | Xicor X2201 1024x1 NOVRAM | | | | |
| x2210 | Xicor X2210 64x4 NOVRAM | | | | |
| x2212 | Xicor X2212 256x4 NOVRAM | | | | |
| x2222 | X2222 (final debug?) | 2000 | Oriental Soft / Promat | | |
| x2222o | X2222 (5-level prototype) | 2000 | Oriental Soft / Promat | x2222 | x2222 |
| x2404p | X2404P I2C Memory | | | | |
| x24c01 | X24C01 I2C Memory | | | | |
| x24c44_16 | Serial EEPROM X24C44 (16x16) | | | | |
| x37 | X37 (prototype) | 1985 | Luxor | | |
| x5jokers | X Five Jokers (Version 1.12) | 200? | Electronic Projects | | |
| x68000 | X68000 | 1987 | Sharp | | |
| x68030 | X68030 | 1993 | Sharp | x68000 | x68000 |
| x68k_cz6bs1 | Sharp CZ-6BS1 SCSI-1 | | | | |
| x68k_expansion_slot | Sharp X680x0 expansion slot | | | | |
| x68k_hdc_image | SASI Hard Disk | | | | |
| x68k_keyboard | Sharp X68000 Keyboard | | | | |
| x68k_midi | X68000 MIDI Interface | | | | |
| x68k_mouse | Sharp X68000 Mouse | | | | |
| x68k_neptunex | Neptune-X | | | | |
| x68ksupr | X68000 Super | 1990 | Sharp | x68000 | x68000 |
| x68kxvi | X68000 XVI | 1991 | Sharp | x68000 | x68000 |
| x76f041 | X76F041 Secure SerialFlash | | | | |
| x76f100 | X76F100 Secure SerialFlash | | | | |
| x80wc | X80 - War Command (ManilaMatic bootleg of Missile Command) | 1981 | bootleg (ManilaMatic) | missile | missile |
| x820 | Xerox 820 | 1981 | Xerox | bigboard | bigboard |
| x820ii | Xerox 820-II | 1983 | Xerox | | |
| x820kb | Xerox 820 Keyboard | | | | |
| xa | Philips 80c51 XA | | | | |
| xavaero | XaviX Aerostep (XaviXPORT, Japan) | 2005 | SSD Company LTD | xavjmat | xavjmat |
| xavbaseb | XaviX Baseball (XaviXPORT) | 2004 | SSD Company LTD | | |
| xavbassf | XaviX Bass Fishing (XaviXPORT) | 2004 | SSD Company LTD | | |
| xavbowl | XaviX Bowling (XaviXPORT) | 2004 | SSD Company LTD | | |
| xavbowlj | XaviX Bowling (XaviXPORT, PT2-BWL-11, Japan) | 2005 | SSD Company LTD | xavbowl | xavbowl |
| xavbox | XaviX Boxing (XaviXPORT) | 2004 | SSD Company LTD | | |
| xavcheck | XaviX Aero Check & Balance (XaviXPORT, Japan) | 2006 | SSD Company LTD | | |
| xavix | XaviX (SSD 97 / SSD 98) | | | | |
| xavix_adc | XaviX ADC | | | | |
| xavix_anport | XaviX Analog ports | | | | |
| xavix_madfb_ball | XaviX / Radica Football Ball | | | | |
| xavix_math | XaviX Math Unit | | | | |
| xavix_mtrk_wheel | XaviX / Radica Monster Truck Steering Wheel | | | | |
| xavix_sound | XaviX Sound | | | | |
| xavix2 | Xavix 2 CPU | | | | |
| xavix2000 | XaviX (SSD 2000) | | | | |
| xavix2002 | XaviX (SSD 2002) (SuperXaviX) | | | | |
| xavix2002io | XaviX 2002 IO | | | | |
| xavjmat | Jackie Chan J-Mat Fitness (XaviXPORT) | 2005 | SSD Company LTD | | |
| xavmusic | XaviX Music & Circuit (XaviXPORT) | 2007 | SSD Company LTD | | |
| xavpkjr | PowerKIDS Jr. (XaviXPORT, Japan) | 2007 | SSD Company LTD | | |
| xavtenni | XaviX Tennis (XaviXPORT) | 2004 | SSD Company LTD | | |
| xb42639 | Apricot XEN-S (Venus I Motherboard 286) | 1989 | Apricot | ibm5170 | ibm5170 |
| xb42639a | Apricot XEN-S (Venus II Motherboard 286) | 1990 | Apricot | ibm5170 | ibm5170 |
| xb42663 | Apricot Qi 300 (Rev D,E & F Motherboard) | 1988 | Apricot | ibm5170 | ibm5170 |
| xb42664 | Apricot XEN-S (Venus I Motherboard 386) | 1989 | Apricot | ibm5170 | ibm5170 |
| xb42664a | Apricot XEN-S (Venus II Motherboard 386) | 1990 | Apricot | ibm5170 | ibm5170 |
| xbase09 | XBase 09 Midi Controlled Analogue Drum Module | 1997 | JoMoX | | |
| xbox | XBOX | 2001 | Microsoft | | |
| xc1701 | Xilinx 1,048,576 bit Serial PROM | | | | |
| xc1702l | Xilinx 2,097,152 bit Serial PROM | | | | |
| xc1704l | Xilinx 4,194,304 bit Serial PROM | | | | |
| xc17128e | Xilinx 131,072 bit Serial PROM | | | | |
| xc17256e | Xilinx 262,144 bit Serial PROM | | | | |
| xc1736e | Xilinx 36,288 bit Serial PROM | | | | |
| xc17512l | Xilinx 524,288 bit Serial PROM | | | | |
| xc1765e | Xilinx 65,536 bit Serial PROM | | | | |
| xd88_01 | XD88/01 | 1990 | Tektronix | | |
| xday2 | X-Day 2 (Japan) | 1995 | Namco | | |
| xds_kbd_hle | XDS Keyboard (HLE) | | | | |
| xds19p | XDS-19P | 1990 | Visual Technology | | |
| xegs | Atari XE Game System | 1987 | Atari | | |
| xen_daisy | Apricot XEN daisy chain abstraction | | | | |
| xenon | Xenon | 1980 | Bally | | |
| xenonf | Xenon (French) | 1980 | Bally | xenon | xenon |
| xenophob | Xenophobe | 1987 | Bally Midway | | |
| xevi3dg | Xevious 3D/G (World, XV32/VER.B) | 1995 | Namco | | |
| xevi3dga | Xevious 3D/G (World, XV32/VER.A) | 1995 | Namco | xevi3dg | xevi3dg |
| xevi3dgj | Xevious 3D/G (Japan, XV31/VER.A) | 1995 | Namco | xevi3dg | xevi3dg |
| xevios | Xevios | 1982 | bootleg | xevious | xevious |
| xevious | Xevious (Namco) | 1982 | Namco | | |
| xeviousa | Xevious (Atari, harder) | 1982 | Namco (Atari license) | xevious | xevious |
| xeviousb | Xevious (Atari) | 1982 | Namco (Atari license) | xevious | xevious |
| xeviousc | Xevious (Atari, Namco PCB) | 1982 | Namco (Atari license) | xevious | xevious |
| xexex | Xexex (ver EAA) | 1991 | Konami | | |
| xexexa | Xexex (ver AAA) | 1991 | Konami | xexex | xexex |
| xexexj | Xexex (ver JAA) | 1991 | Konami | xexex | xexex |
| xeye | X'eye (USA, NTSC) | 1993 | JVC | | |
| xfiles | The X-Files | 1999 | dgPIX Entertainment Inc. | | |
| xfiles2 | X-Files (CPU 2.04, display A2.01) | 1997 | Sega | xfilesp | xfilesp |
| xfiles20 | X-Files (CPU 2.00, display A2.00) | 1997 | Sega | xfilesp | xfilesp |
| xfilesk | The X-Files (censored, Korea) | 1999 | dgPIX Entertainment Inc. | xfiles | xfiles |
| xfilesp | X-Files (CPU 3.03, display A3.00) | 1997 | Sega | | |
| xfilespf | X-Files (CPU 3.03, display F3.00, France) | 1997 | Sega | xfilesp | xfilesp |
| xforce | X Force | 1987 | Tecnoplay | | |
| xga_copro | IBM XGA Coprocessor | | | | |
| xiaoao | Xiao Ao Jiang Hu (China, Ver. 1.00) | 1999 | Subsino | bishjan | bishjan |
| xiistag | XII Stag (V2.01J 2002/6/26 22:27) | 2002 | Triangle Service | coh3002t | |
| xing48 | Xing Wireless Interactive TV Game 'Wi TV Zone' 48-in-1 (Europe, PAL) | 200? | Xing | | |
| xiprocessor | Xi processor board | 2012 | Sergey Kiselev | ibm5150 | ibm5150 |
| xjinhuang | Xin Jin Huangguan (V400CN) | 1997 | IGS | | |
| xl25 | XL 25 | 1983 | Vulcan Electronics | | |
| xm200 | XM200 Orchestra Module | 1990 | Orla | | |
| xm3301 | Toshiba XM-3301 CD-ROM Drive | | | | |
| xmap9 | SGI XMAP9 | | | | |
| xmcota | X-Men: Children of the Atom (Europe 950331) | 1994 | Capcom | | |
| xmcotaa | X-Men: Children of the Atom (Asia 950105) | 1994 | Capcom | xmcota | xmcota |
| xmcotaar1 | X-Men: Children of the Atom (Asia 941219) | 1994 | Capcom | xmcota | xmcota |
| xmcotaar2 | X-Men: Children of the Atom (Asia 941217) | 1994 | Capcom | xmcota | xmcota |
| xmcotab | X-Men: Children of the Atom (Brazil 950331) | 1994 | Capcom | xmcota | xmcota |
| xmcotah | X-Men: Children of the Atom (Hispanic 950331) | 1994 | Capcom | xmcota | xmcota |
| xmcotahr1 | X-Men: Children of the Atom (Hispanic 950105) | 1994 | Capcom | xmcota | xmcota |
| xmcotaj | X-Men: Children of the Atom (Japan 950105) | 1994 | Capcom | xmcota | xmcota |
| xmcotaj1 | X-Men: Children of the Atom (Japan 941222) | 1994 | Capcom | xmcota | xmcota |
| xmcotaj2 | X-Men: Children of the Atom (Japan 941219) | 1994 | Capcom | xmcota | xmcota |
| xmcotaj3 | X-Men: Children of the Atom (Japan 941217) | 1994 | Capcom | xmcota | xmcota |
| xmcotajr | X-Men: Children of the Atom (Japan 941208 rent version) | 1994 | Capcom | xmcota | xmcota |
| xmcotar1 | X-Men: Children of the Atom (Europe 950105) | 1994 | Capcom | xmcota | xmcota |
| xmcotar1d | X-Men: Children of the Atom (Europe 950105 Phoenix Edition) (bootleg) | 1994 | bootleg | xmcota | xmcota |
| xmcotau | X-Men: Children of the Atom (USA 950105) | 1994 | Capcom | xmcota | xmcota |
| xmen | X-Men (4 Players ver EBA) | 1992 | Konami | | |
| xmen2pa | X-Men (2 Players ver AAA) | 1992 | Konami | xmen | xmen |
| xmen2pe | X-Men (2 Players ver EAA) | 1992 | Konami | xmen | xmen |
| xmen2pj | X-Men (2 Players ver JAA) | 1992 | Konami | xmen | xmen |
| xmen2pu | X-Men (2 Players ver UAB) | 1992 | Konami | xmen | xmen |
| xmen6p | X-Men (6 Players ver ECB) | 1992 | Konami | xmen | xmen |
| xmen6pu | X-Men (6 Players ver UCB) | 1992 | Konami | xmen | xmen |
| xmena | X-Men (4 Players ver AEA) | 1992 | Konami | xmen | xmen |
| xmenaa | X-Men (4 Players ver ADA) | 1992 | Konami | xmen | xmen |
| xmenabl | X-Men (4 Players ver AEA, bootleg) | 1992 | bootleg | xmen | xmen |
| xmenj | X-Men (4 Players ver JBA) | 1992 | Konami | xmen | xmen |
| xmenja | X-Men (4 Players ver JEA) | 1992 | Konami | xmen | xmen |
| xmenu | X-Men (4 Players ver UBB) | 1992 | Konami | xmen | xmen |
| xmenua | X-Men (4 Players ver UEB) | 1992 | Konami | xmen | xmen |
| xmpu4chrpalboot19 | MPU4 bootleg Characteriser (fixed returns) | | | | |
| xmultipl | X Multiply (World, M81 hardware) | 1989 | Irem | | |
| xmultiplm72 | X Multiply (Japan, M72 hardware) | 1989 | Irem | xmultipl | xmultipl |
| xmvsf | X-Men Vs. Street Fighter (Europe 961004) | 1996 | Capcom | | |
| xmvsfa | X-Men Vs. Street Fighter (Asia 961023) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfar1 | X-Men Vs. Street Fighter (Asia 961004) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfar2 | X-Men Vs. Street Fighter (Asia 960919) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfar3 | X-Men Vs. Street Fighter (Asia 960910) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfb | X-Men Vs. Street Fighter (Brazil 961023) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfh | X-Men Vs. Street Fighter (Hispanic 961004) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfj | X-Men Vs. Street Fighter (Japan 970113) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfjr1 | X-Men Vs. Street Fighter (Japan 961023) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfjr2 | X-Men Vs. Street Fighter (Japan 961004) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfjr3 | X-Men Vs. Street Fighter (Japan 960910) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfjr4 | X-Men Vs. Street Fighter (Japan 960909) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfr1 | X-Men Vs. Street Fighter (Europe 960910) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfu | X-Men Vs. Street Fighter (USA 961023) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfu1d | X-Men Vs. Street Fighter (USA 961004 Phoenix Edition) (bootleg) | 1996 | bootleg | xmvsf | xmvsf |
| xmvsfur1 | X-Men Vs. Street Fighter (USA 961004) | 1996 | Capcom | xmvsf | xmvsf |
| xmvsfur2 | X-Men Vs. Street Fighter (USA 960910) | 1996 | Capcom | xmvsf | xmvsf |
| xor100 | XOR S-100-12 | 1980 | XOR Data Science | | |
| xorwflat | Xor World (different hardware, ver 1.1, checksum 3333BA, prototype) | 1990 | Gaelco | | |
| xorwflata | Xor World (different hardware, ver 1.1, checksum 333462, prototype) | 1990 | Gaelco | xorwflat | xorwflat |
| xorwldms | Xor World (Modular System, prototype, set 1) | 1990 | Gaelco | | |
| xorwldmsa | Xor World (Modular System, prototype, set 2) | 1990 | Gaelco | xorwldms | xorwldms |
| xorworld | Xor World (ver 1.2, checksum DB5D0F, prototype) | 1990 | Gaelco | | |
| xorworlda | Xor World (ver 1.2, checksum DB5D10, prototype) | 1990 | Gaelco | xorworld | xorworld |
| xpander | Xpander | 1984 | Oberheim | | |
| xplan | X-Plan (Ver. 101) | 2006 | Subsino | | |
| xr68c681 | XR68C681 DUART | | | | |
| xrally | Xtreme Rally / Off Beat Racer! | 1998 | SNK | hng64 | |
| xreel | X-Reel | 2002 | Subsino (ECM license) | queenbee | queenbee |
| xsandos | X's & O's | 1983 | Bally | | |
| xsedae | X Se Dae Quiz (Korea) | 1995 | Dream Island | | |
| xsleena | Xain'd Sleena (World) | 1986 | Technos Japan (Taito license) | | |
| xsleenab | Xain'd Sleena (bootleg, set 1) | 1986 | bootleg | xsleena | xsleena |
| xsleenaba | Xain'd Sleena (bootleg, bugfixed) | 1987 | bootleg | xsleena | xsleena |
| xsleenabb | Xain'd Sleena (bootleg, set 2) | 1987 | bootleg | xsleena | xsleena |
| xsleenaj | Xain'd Sleena (Japan) | 1986 | Technos Japan | xsleena | xsleena |
| xt_hdc | Generic PC-XT Fixed Disk Controller | | | | |
| xt446 | Yamaha XT446 synth (embedded MU100B) | | | | |
| xtensa | Tensilica Xtensa core | | | | |
| xtheball | X the Ball | 1991 | Rare | | |
| xtide | XT-IDE Fixed Drive Adapter | | | | |
| xtom3d | X Tom 3D | 1999 | Andamiro / Jamie System Development | | |
| xtrain | X-Train (Ver. 1.3) | 1999 | Subsino | | |
| xtrial | Xtrial Racing (ver JAB) | 2002 | Konami | kviper | |
| xtrmhnt2 | Extreme Hunting 2 | 2006 | Sega | awbios | |
| xtrmhunt | Extreme Hunting | 2004 | Sammy | awbios | |
| xunitvid | Midway X-Unit Video | | | | |
| xvd701 | JVC XV-D701 | | | | |
| xxmissio | XX Mission | 1986 | UPL | | |
| xybots | Xybots (rev 2) | 1987 | Atari Games | | |
| xybots0 | Xybots (rev 0) | 1987 | Atari Games | xybots | xybots |
| xybots1 | Xybots (rev 1) | 1987 | Atari Games | xybots | xybots |
| xybotsf | Xybots (French, rev 3) | 1987 | Atari Games | xybots | xybots |
| xybotsg | Xybots (German, rev 3) | 1987 | Atari Games | xybots | xybots |
| xyddz | Xiaoyao Dou Dizhu (V216CN) | 200? | IGS | | |
| xyddzhh | Xingyun Dou Dizhu | 2006 | Herb Home | | |
| xydn | Xiyou Douniu (S110CN) | 200? | IGS | | |
| xymg | Xingyun Manguan (China, V651C, set 1) | 1996 | IGS | | |
| xymga | Xingyun Manguan (China, V651C, set 2) | 1996 | IGS | xymg | xymg |
| xyonix | Xyonix | 1989 | Philko | | |
| xypdk | Xingyun Pao De Kuai (V106CN) | 2005 | IGS | | |
| xypmd | Xingyun Paomadi Super (V401CN) | 2003 | IGS | | |
| xypmda | Xingyun Paomadi (unknown ver) | 1999 | IGS | xypmd | xypmd |
| y2404 | Y2404 | | | | |
| y301xl | 301 XL (Yeno) | 1988 | Yeno / Bray Research | | |
| y416xl | 416 XL (Yeno) | 1989 | Yeno | | |
| y503iiir | YIS-503 III R (MSX2, USSR) | 1985 | Yamaha | | |
| y503iiire | YIS-503 III R (MSX2, Estonian) | 198? | Yamaha | y503iiir | y503iiir |
| y503iir | YIS503IIR (MSX1, USSR) | 1985 | Yamaha | yis503 | yis503 |
| y503iir2 | YIS503IIR (MSX1, Estonian) | 1986 | Yamaha | yis503 | yis503 |
| y532xl | 532 XL (Yeno) | 1989 | Yeno | | |
| y805128 | YIS805/128 (MSX2, Japan) | 1986 | Yamaha | y805256 | y805256 |
| y805128r2 | YIS805/128R2 (MSX2, USSR) | 1986 | Yamaha | y805256 | y805256 |
| y805128r2e | YIS805/128R2 (MSX2, Estonian) | 198? | Yamaha | y805256 | y805256 |
| y805256 | YIS805/256 (MSX2, Japan) | 198? | Yamaha | | |
| y8950 | Y8950 OPL MSX-Audio | | | | |
| yachtmn | Yachtsman | 1982 | Sanritsu / Esco | mermaid | mermaid |
| yakyuken | The Yakyuken (bootleg) | 1982 | bootleg | | |
| yamagchi | Go Go Mr. Yamaguchi / Yuke Yuke Yamaguchi-kun | 1985 | Kaneko / Taito | | |
| yamato | Yamato (set 1) | 1983 | Sega | | |
| yamatoa | Yamato (set 2) | 1983 | Sega | yamato | yamato |
| yamatou | Yamato (US) | 1983 | Sega | yamato | yamato |
| yamyam | Yam! Yam!? | 1990 | Dooyong | | |
| yamyamk | Yam! Yam! (Korea) | 1990 | Dooyong | yamyam | yamyam |
| yanchamr | Kaiketsu Yanchamaru (Japan) | 1986 | Irem | kidniki | kidniki |
| yankeedo | Yankee DO! | 1982 | hack | mrdo | mrdo |
| yarunara | Mahjong Yarunara (Japan) | 1991 | Dynax | | |
| yattrmnp | Yatterman Plus (J 981006 V1.000) | 1998 | Sega | stvbios | |
| yc64 | YC-64 (MSX1, Europe) | 1984 | Yashica | | |
| yellowcbb | Yellow Cab (bootleg) | 1984 | bootleg | kamikcab | kamikcab |
| yellowcbj | Yellow Cab (Japan) | 1984 | Data East Corporation | kamikcab | kamikcab |
| yes | :YES | 1985 | Philips | | |
| yesnoj | Yes/No Sinri Tokimeki Chart | 1992 | Taito Corporation | | |
| ygv608 | YGV608 VDP | | | | |
| yiear | Yie Ar Kung-Fu (version I) | 1985 | Konami | | |
| yiear2 | Yie Ar Kung-Fu (version G) | 1985 | Konami | yiear | yiear |
| yieartf | Yie Ar Kung-Fu (bootleg GX361 conversion) | 1985 | bootleg | yiear | yiear |
| yis303 | YIS303 (MSX1, Japan) | 1984 | Yamaha | | |
| yis503 | YIS503 (MSX1, Japan) | 1984 | Yamaha | | |
| yis503f | YIS503F (MSX1, French) | 1984 | Yamaha | yis503 | yis503 |
| yis503ii | YIS503II (MSX1, Japan) | 1985 | Yamaha | yis503 | yis503 |
| yis604 | YIS604/128 (MSX2, Japan) | 1985 | Yamaha | | |
| yizhix | Yizhi Xiangqi | 1996 | WHT | | |
| ym2148 | Yamaha YM2148 MIDI/Keyboard Interface | | | | |
| ym2149 | YM2149 SSG | | | | |
| ym2151 | YM2151 OPM | | | | |
| ym2154 | YM2154 (RYP4) | | | | |
| ym2164 | YM2164 OPP | | | | |
| ym2203 | YM2203 OPN | | | | |
| ym2413 | YM2413 OPLL | | | | |
| ym2414 | YM2414 OPZ | | | | |
| ym2423 | YM2423 OPLL-X | | | | |
| ym2608 | YM2608 OPNA | | | | |
| ym2610 | YM2610 OPNB | | | | |
| ym2610b | YM2610B OPNB2 | | | | |
| ym2612 | YM2612 OPN2 | | | | |
| ym3438 | YM3438 OPN2C | | | | |
| ym3439 | YM3439 SSGC | | | | |
| ym3526 | YM3526 OPL | | | | |
| ym3533 | YM3533 OPQ | | | | |
| ym3802 | Yamaha YM3802 MCS MIDI Communication and Service Controller | | | | |
| ym3806 | YM3806 OPQ | | | | |
| ym3812 | YM3812 OPL2 | | | | |
| ym7101 | Yamaha YM7101 | | | | |
| ymcapsul | Yu-Gi-Oh Monster Capsule | 1999 | Konami | | |
| ymf262 | YMF262 OPL3 | | | | |
| ymf271 | Yamaha YMF271 OPX | | | | |
| ymf276 | YMF276 OPN2L | | | | |
| ymf278b | YMF278B OPL4 | | | | |
| ymf281 | YMF281 OPLLP | | | | |
| ymw258f | Yamaha YMW-258-F | | | | |
| ymz280b | Yamaha YMZ280B PCMD8 | | | | |
| ymz284 | YMZ284 SSGL | | | | |
| ymz294 | YMZ294 SSGLP | | | | |
| ymz770 | Yamaha YMZ770C AMMS-A | | | | |
| ymz774 | Yamaha YMZ774 AMMS2C | | | | |
| yorijori | Yori Jori Kuk Kuk | 2002 | Golden Bell Entertainment | | |
| yosakdon | Yosaku to Donbei (set 1) | 1979 | Wing | | |
| yosakdona | Yosaku to Donbei (set 2) | 1979 | Wing | yosakdon | yosakdon |
| yosimotm | Mahjong Yoshimoto Gekijou (Japan, medal) | 1994 | Nichibutsu / Yoshimoto Kougyou | yosimoto | yosimoto |
| yosimoto | Mahjong Yoshimoto Gekijou (Japan) | 1994 | Nichibutsu / Yoshimoto Kougyou | | |
| youjyudn | Youjyuden (Japan) | 1986 | Irem | | |
| youkai | Youkai VS Uchuujin | 2007 | Amodio / Tomy | | |
| youkaidk1 | Youkai Douchuuki (Japan, old version (YD1)) | 1987 | Namco | shadowld | shadowld |
| youkaidk2 | Youkai Douchuuki (Japan, new version (YD2, Rev B)) | 1987 | Namco | shadowld | shadowld |
| youma | Youma Ninpou Chou (Japan) | 1986 | Nichibutsu | ninjemak | ninjemak |
| youma2 | Youma Ninpou Chou (Japan, alt) | 1986 | Nichibutsu | ninjemak | ninjemak |
| youmab | Youma Ninpou Chou (Game Electronics bootleg, set 1) | 1986 | bootleg | ninjemak | ninjemak |
| youmab2 | Youma Ninpou Chou (Game Electronics bootleg, set 2) | 1986 | bootleg | ninjemak | ninjemak |
| yoyospel | YoYo Spell (prototype) | 1992 | Inder | littlerb | littlerb |
| yujan | Yu-Jan | 1999 | Yubis / T.System | macsbios | |
| yujogs | Yujo Gattai Shishigami-o | 2007 | Amodio / Tomy | | |
| yuka | Yu-Ka | 1999 | Yubis / T.System | macsbios | |
| yukiwo | Yukiwo (World, prototype) | 1989 | Taito Corporation Japan | masterw | masterw |
| yukon | Yukon (version 2.0) | 1989 | Exidy | | |
| yukon1 | Yukon (version 1.0) | 1989 | Exidy | yukon | yukon |
| yukongl5 | Yukon Gold (03J00191, NSW/ACT) | 2000 | Aristocrat | aristmk5 | |
| yukongld | Yukon Gold (Russian) | 2000 | WMS | | |
| yumefuda | Yumefuda | 1991 | Alba | | |
| yutnori | Puzzle Yutnori (Korea) | 1999 | Nunal | | |
| yuyugogo | Yuuyu no Quiz de GO!GO! (Japan) | 1990 | Taito Corporation | | |
| yuyuhaku | The Battle of Yu Yu Hakusho: Shitou! Ankoku Bujutsukai! | 2006 | Banpresto | sys256 | |
| yyhm | Yuanyang Hudie Meng (Version 8.8A 2005-09-25) | 2005 | GMS | | |
| z_89_11 | Heath/Zenith Z-89-11 Multi-Function I/O Card | | | | |
| z100 | Z-100 | 1982 | Zenith Data Systems | | |
| z1013 | Z1013 (matrix 8x4) | 1985 | VEB Robotron Electronics Riesa | | |
| z1013a2 | Z1013 (matrix 8x8) | 1985 | VEB Robotron Electronics Riesa | z1013 | z1013 |
| z1013k69 | Z1013 (K7669) | 1985 | VEB Robotron Electronics Riesa | z1013 | z1013 |
| z1013k76 | Z1013 (K7659) | 1985 | VEB Robotron Electronics Riesa | z1013 | z1013 |
| z1013s60 | Z1013 (K7652/S6009) | 1985 | VEB Robotron Electronics Riesa | z1013 | z1013 |
| z180asci_channel_0 | Z180 ASCI Channel 0 | | | | |
| z180asci_channel_1 | Z180 ASCI Channel 1 | | | | |
| z180asci_ext_channel_0 | Z180 ASCI Extended Channel 0 | | | | |
| z180asci_ext_channel_1 | Z180 ASCI Extended Channel 1 | | | | |
| z180csio | Z180 CSIO | | | | |
| z22 | Z-22 Terminal | 1984 | Zenith Data Systems | | |
| z29 | Z-29 Terminal | 1983 | Zenith Data Systems | | |
| z29_kbd | Z-29 Keyboard Port | | | | |
| z80 | Zilog Z80 | | | | |
| z8001 | Zilog Z8001 | | | | |
| z8002 | Zilog Z8002 | | | | |
| z80180 | Zilog Z80180 | | | | |
| z80182 | Zilog Z80182 | | | | |
| z8036 | Zilog Z8036 Z-CIO | | | | |
| z8038 | FIFO Input/Output Interface Unit | | | | |
| z80clock | Z80 based, triple time zone clock | 2020 | Tom Storey | | |
| z80ctc | Z80 CTC | | | | |
| z80ctc_channel | Z80 CTC Channel | | | | |
| z80daisy_generic | Generic Z80 daisy chain device | | | | |
| z80dart | Z80 DART | | | | |
| z80dart_channel | Z80 DART channel | | | | |
| z80dev | Z80 dev board | 198? | | | |
| z80dma | Zilog Z80 DMA Controller | | | | |
| z80n | Z80N | | | | |
| z80ne | Z80NE | 1980 | Nuova Elettronica | | |
| z80net | Z80NE + LX.388 | 1980 | Nuova Elettronica | z80ne | z80ne |
| z80netb | Z80NE + LX.388 + Basic 16k | 1980 | Nuova Elettronica | z80ne | z80ne |
| z80netf | Z80NE + LX.388 + LX.390 | 1980 | Nuova Elettronica | z80ne | z80ne |
| z80pio | Z80 PIO | | | | |
| z80scc_channel | Z80 SCC Channel | | | | |
| z80sio | Z80 SIO | | | | |
| z80sio_channel | Z80 SIO channel | | | | |
| z80sti | Mostek MK3801 STI | | | | |
| z84c015 | Zilog Z84C015 | | | | |
| z8536 | Zilog Z8536 CIO | | | | |
| z8601 | Zilog Z8601 | | | | |
| z8611 | Zilog Z8611 | | | | |
| z8671 | Zilog Z8671 | | | | |
| z8681 | Zilog Z8681 | | | | |
| z8682 | Zilog Z8682 | | | | |
| z86e02 | Zilog Z86E02 | | | | |
| z88 | Z88 | 1988 | Cambridge Computers | | |
| z88_1024k_flash | Z88 1024KB Flash | | | | |
| z88_1024k_ram | Z88 1024KB RAM | | | | |
| z88_128k_ram | Z88 128KB RAM | | | | |
| z88_128k_rom | Z88 128KB ROM | | | | |
| z88_256k_rom | Z88 256KB ROM | | | | |
| z88_32k_ram | Z88 32KB RAM | | | | |
| z88_32k_rom | Z88 32KB ROM | | | | |
| z88_512k_ram | Z88 512KB RAM | | | | |
| z88_impexp | Z88 Imp-Export protocol | | | | |
| z88cart_slot | Z88 Cartridge Slot | | | | |
| z88ch | Z88 (Swiss) | 1988 | Cambridge Computers | z88 | z88 |
| z88de | Z88 (German) | 1988 | Cambridge Computers | z88 | z88 |
| z88dk | Z88 (Danish) | 1988 | Cambridge Computers | z88 | z88 |
| z88es | Z88 (Spanish) | 1988 | Cambridge Computers | z88 | z88 |
| z88fi | Z88 (Finnish) | 1988 | Cambridge Computers | z88 | z88 |
| z88fr | Z88 (French) | 1988 | Cambridge Computers | z88 | z88 |
| z88it | Z88 (Italian) | 1988 | Cambridge Computers | z88 | z88 |
| z88no | Z88 (Norwegian) | 1988 | Cambridge Computers | z88 | z88 |
| z88se | Z88 (Swedish) | 1988 | Cambridge Computers | z88 | z88 |
| z88tr | Z88 (Turkish) | 1988 | Cambridge Computers | z88 | z88 |
| z8s180 | Zilog Z8S180 | | | | |
| z90 | Z-90 | 1981 | Zenith Data Systems | h89 | h89 |
| z9001 | Z9001 (KC 85/1.10) | 1984 | Robotron | | |
| zac1b11107 | Zaccaria 1B11107 Sound Board | | | | |
| zac1b11142 | Zaccaria 1B11142 Sound Board | | | | |
| zackman | Zackman | 1983 | Bandai | | |
| zankor | Zankor (TMS5200 Italian speech) | 1986 | Zaccaria | | |
| zankor2i | Zankor (TMS5220 Italian speech) | 1986 | Zaccaria | zankor | zankor |
| zapcomp | ZAP - Z80 Applications Processor | 1981 | Steve Ciarcia / BYTE / McGRAW-HILL | | |
| zaryavos | Zarya Vostoka | 1984 | Nova Games of Canada | | |
| zarza | Zarza (set 1) | 1982 | Taito do Brasil | | |
| zarza1 | Zarza (set 2) | 1982 | Taito do Brasil | zarza | zarza |
| zarzon | Zarzon | 1981 | SNK (Taito America license) | satansat | satansat |
| zaviga | Zaviga | 1984 | Data East Corporation | | |
| zavigaj | Zaviga (Japan) | 1984 | Data East Corporation | zaviga | zaviga |
| zaxxon | Zaxxon (set 1, rev D) | 1982 | Sega | | |
| zaxxon2 | Zaxxon (set 2, unknown rev) | 1982 | Sega | zaxxon | zaxxon |
| zaxxon3 | Zaxxon (set 3, unknown rev) | 1982 | Sega | zaxxon | zaxxon |
| zaxxonb | Jackson | 1982 | bootleg | zaxxon | zaxxon |
| zaxxonj | Zaxxon (Japan) | 1982 | Sega | zaxxon | zaxxon |
| zdog | ZDog (44 in 1) | 200? | Hummer Technology Co., Ltd. | | |
| zdrum | Zooty Drum | 2000 | PARA Enterprises | | |
| zdsupers | SuperSport | 1987 | Zenith Data Systems | ibm5150 | ibm5150 |
| zdz150 | Z-150 Series | 198? | Zenith Data Systems | ibm5150 | ibm5150 |
| zdz160 | Z-160 Series | 198? | Zenith Data Systems | ibm5150 | ibm5150 |
| zdz180 | Z-180 Series | 1987 | Zenith Data Systems | ibm5150 | ibm5150 |
| zdz248 | Z-248 | 198? | Zenith Data Systems | ibm5170 | ibm5170 |
| zedblade | Zed Blade / Operation Ragnarok | 1994 | NMK | neogeo | |
| zeebo | Zeebo (Brazil) | 2009 | Zeebo Inc. | | |
| zekepeak | Zeke's Peak | 1983 | Taito | icecold | icecold |
| zektor | Zektor (revision B) | 1982 | Sega | | |
| zektor_audio | Zektor Sound Board | | | | |
| zelos | Zelos (Japan, main unit) | 1994 | Namco | | |
| zelost | Zelos (Japan, terminal) | 1994 | Namco | | |
| zenponta | Zenigata Ponta (Japan, ver 1.02) | 2005 | Amuzy Corporation | | |
| zeos386sx | 386 SX-16 | 198? | ZEOS | ibm5170 | ibm5170 |
| zephy | Zephy (set 1) | 1981 | LTD | | |
| zephya | Zephy (set 2) | 1981 | LTD | zephy | zephy |
| zephyr | Zephyr (00-441-01) | 1979 | Zentec | | |
| zero | Zero (bootleg of Defender, set 1) | 1980 | bootleg (Jeutel) | defender | defender |
| zero2 | Zero (bootleg of Defender, set 2) | 1980 | bootleg (Amtec) | defender | defender |
| zerogu2 | Zero Gunner 2 | 2001 | Psikyo | naomi | |
| zerogun | Zero Gunner (Export, Model 2B) | 1997 | Psikyo | | |
| zeroguna | Zero Gunner (Export, Model 2A) | 1997 | Psikyo | zerogun | zerogun |
| zerogunaj | Zero Gunner (Japan, Model 2A) | 1997 | Psikyo | zerogun | zerogun |
| zerogunj | Zero Gunner (Japan, Model 2B) | 1997 | Psikyo | zerogun | zerogun |
| zerohour | Zero Hour (set 1) | 1980 | Universal | | |
| zerohour_stars | Zero Hour/Red Clash/Space Raider starfield | | | | |
| zerohoura | Zero Hour (set 2) | 1980 | Universal | zerohour | zerohour |
| zerohouri | Zero Hour (bootleg) | 1980 | bootleg (Inder SA) | zerohour | zerohour |
| zeropnt | Zero Point (set 1) | 1998 | Unico | | |
| zeropnt2 | Zero Point 2 | 1999 | Unico | | |
| zeropnta | Zero Point (set 2) | 1998 | Unico | zeropnt | zeropnt |
| zeropntj | Zero Point (Japan) | 1998 | Unico | zeropnt | zeropnt |
| zeroteam | Zero Team USA (US) | 1993 | Seibu Kaihatsu (Fabtek license) | | |
| zeroteama | Zero Team (Japan?, earlier?, set 1) | 1993 | Seibu Kaihatsu | zeroteam | zeroteam |
| zeroteamb | Zero Team (Japan?, later batteryless) | 1993 | Seibu Kaihatsu | zeroteam | zeroteam |
| zeroteamc | Zero Team (Taiwan) | 1993 | Seibu Kaihatsu (Liang Hwa license) | zeroteam | zeroteam |
| zeroteamd | Zero Team (Korea) | 1993 | Seibu Kaihatsu (Dream Soft license) | zeroteam | zeroteam |
| zeroteame | Zero Team (Japan?, earlier?, set 2) | 1993 | Seibu Kaihatsu | zeroteam | zeroteam |
| zeroteams | Zero Team Selection | 1993 | Seibu Kaihatsu | zeroteam | zeroteam |
| zeroteamsr | Zero Team Suicide Revival Kit | 1993 | Seibu Kaihatsu | zeroteam | zeroteam |
| zerotime | Zero Time (Petaco S.A.) | 1979 | bootleg? (Petaco S.A.) | galaxian | galaxian |
| zerotimea | Zero Time (Spanish bootleg, set 1) | 1979 | bootleg | galaxian | galaxian |
| zerotimeb | Zero Time (Spanish bootleg, set 2) | 1979 | bootleg | galaxian | galaxian |
| zerotimed | Zero Time (Datamat) | 1979 | bootleg (Datamat) | galaxian | galaxian |
| zerotimemc | Zero Time (Marti Colls) | 1979 | bootleg (Marti Colls) | galaxian | galaxian |
| zerotm2k | Zero Team 2000 | 2000 | Seibu Kaihatsu | zeroteam | zeroteam |
| zerotrgt | Zero Target (World, CW) | 1985 | Data East Corporation | | |
| zerotrgta | Zero Target (World, CT) | 1985 | Data East Corporation | zerotrgt | zerotrgt |
| zerowing | Zero Wing (2P set) | 1989 | Toaplan | | |
| zerowing1 | Zero Wing (1P set) | 1989 | Toaplan | zerowing | zerowing |
| zerowingw | Zero Wing (2P set, Williams license) | 1989 | Toaplan (Williams license) | zerowing | zerowing |
| zerozone | Zero Zone | 1993 | Comad | | |
| zeus2 | Midway Zeus2 | | | | |
| zexall | Zexall (FPGA Z80 test interface) | 2009 | Frank Cringle / Kevin Horton | | |
| zfirenze | Firenze (vending machine) | 1995 | Zanussi / Necta | | |
| zfmicro_usb | ZFMicro PCIUSB Host Controller | | | | |
| zgundm | Mobile Suit Z-Gundam: A.E.U.G. vs Titans (ZGA1 Ver. A) | 2003 | Capcom / Banpresto | sys246 | |
| zgundmdx | Mobile Suit Z-Gundam: A.E.U.G. vs Titans DX (ZDX1 Ver. A) | 2004 | Capcom / Banpresto | sys246 | |
| zhonggmj | Zhongguo Majiang | 200? | I.A.M. | | |
| zhongguo | Zhongguo Chu Da D (V102C) | 2000 | IGS | | |
| zi4dvs | 4DVS | 199? | ZIDA | ibm5170 | ibm5170 |
| zidav630e | V630E Baby AT (SiS630 chipset) | 2001 | Zida | | |
| zigzagb | Zig Zag (bootleg Dig Dug conversion on Galaxian hardware, set 1) | 1982 | bootleg (LAX) | | |
| zigzagb2 | Zig Zag (bootleg Dig Dug conversion on Galaxian hardware, set 2) | 1982 | bootleg (LAX) | zigzagb | zigzagb |
| zijini | Zi Jin I | 1989 | Nanjing Computer Factory | | |
| zingzip | Zing Zing Zip (World) / Zhen Zhen Ji Pao (China?) | 1992 | Allumer / Tecmo | | |
| zingzipbl | Zing Zing Zip (bootleg) | 1992 | bootleg | zingzip | zingzip |
| zintrckb | Zintrick / Oshidashi Zentrix (bootleg of CD version) | 1996 | bootleg | neogeo | |
| zip100_ide | Iomega Zip 100MB IDE Drive | | | | |
| zippity | Zippity (US) | 201? | LeapFrog | | |
| zippityuk | Zippity (UK) | 201? | LeapFrog | zippity | zippity |
| zipzap | Zip & Zap (Explicit) | 1995 | Barko Corp | | |
| zipzapa | Zip & Zap (Less Explicit) | 1995 | Barko Corp | zipzap | zipzap |
| zira | Zira | 1980 | Playmatic | | |
| zircon2 | Zircon II | 1995 | Novag Industries / Intelligent Heuristic Programming | | |
| zito4dps | Tomato board 4DPS | 199? | ZIDA | | |
| zjddz | Zhongji Dou Dizhu (V204CN) | 2010 | IGS | | |
| zn425e | ZN425E DAC | | | | |
| zn426e | ZN426E-8 DAC | | | | |
| zn428e | ZN428E-8 DAC | | | | |
| zn429e | ZN429E-8 DAC | | | | |
| zn449 | ZN449 ADC | | | | |
| znmcu | Sony ZN MCU | | | | |
| znpwfv | Zen Nippon Pro-Wres Featuring Virtua (J 971123 V1.000) | 1997 | Sega | stvbios | |
| znpwfvt | All Japan Pro-Wrestling Featuring Virtua (T 971123 V1.000) | 1997 | Sega | znpwfv | znpwfv |
| zoar | Zoar | 1982 | Data East USA | | |
| zodiac | Zodiac: The Astrology Computer | 1979 | Coleco | | |
| zodiack | Zodiack | 1983 | Orca (Esco Trading Co., Inc. license) | | |
| zoidiexp | Zoids Infinity EX Plus (ver. 2.10) | 2006 | Tomy / Taito | sys246 | |
| zoids | Zoids | 2005 | Amodio / Tomy | | |
| zoidsinf | Zoids Infinity | 2004 | Tomy / Taito | sys246 | |
| zokumahj | Zoku Mahjong Housoukyoku (Japan) | 199? | Nichibutsu? | mhhonban | mhhonban |
| zokuoten | Zoku Otenamihaiken (V2.05J 2003/05/12 18:00) | 2003 | Success | coh3002t | |
| zokuotena | Zoku Otenamihaiken (V2.03J 2001/02/16 16:00) | 2001 | Success | zokuoten | zokuoten |
| zombraid | Zombie Raid (9/28/95, US) | 1995 | American Sammy | | |
| zombraidp | Zombie Raid (9/28/95, US, prototype PCB) | 1995 | American Sammy | zombraid | zombraid |
| zombraidpj | Zombie Raid (9/28/95, Japan, prototype PCB) | 1995 | Sammy Industries | zombraid | zombraid |
| zombrvn | Zombie Revenge (Rev A) | 1999 | Sega | naomi | |
| zombrvne | Zombie Revenge (Export) | 1999 | Sega | zombrvn | zombrvn |
| zombrvno | Zombie Revenge | 1999 | Sega | zombrvn | zombrvn |
| zon32bit | Zone 32-bit Gaming Console System (Family Sport 41-in-1) | 200? | Ultimate Products (HK) Ltd / Senca | | |
| zone100 | Zone 100 | 200? | Ultimate Products (HK) Ltd / Jungle's Soft | | |
| zone3d | Zone 3D | 201? | Zone | | |
| zone40 | Zone 40 | 2009 | Ultimate Products Ltd. / Waixing | | |
| zone60 | Zone 60 | 2010 | Ultimate Products (HK) Ltd / Jungle's Soft | | |
| zone7in1 | Zone 7-in-1 Sports (NTSC) | 200? | Ultimate Products Ltd. | | |
| zone7in1p | Zone 7-in-1 Sports (PAL) | 200? | Ultimate Products Ltd. | zone7in1 | zone7in1 |
| zonefamf | Zone Family Fit | 201? | Zone | | |
| zonefusn | Zone Fusion | 200? | Ultimate Products / Jungle's Soft | | |
| zonemini | Zone Mini | 200? | Ultimate Products Ltd. / Waixing | | |
| zoo | Zoo (Ver. ZO.02.D, Aug 27 2004) | 2004 | Astro Corp. | | |
| zoofari | Zoofari | 2006 | ICE/Play Mechanix | | |
| zookeep | Zoo Keeper (set 1) | 1982 | Taito America Corporation | | |
| zookeep2 | Zoo Keeper (set 2) | 1982 | Taito America Corporation | zookeep | zookeep |
| zookeep3 | Zoo Keeper (set 3) | 1982 | Taito America Corporation | zookeep | zookeep |
| zookeepbl | Zoo Keeper (bootleg) | 1982 | bootleg | zookeep | zookeep |
| zoom909 | Zoom 909 | 1982 | Sega | buckrog | buckrog |
| zoomania | Zoomania (Version 10.04, set 1) | 200? | Industrias Brasileiras | | |
| zoomaniaa | Zoomania (Version 10.04, set 2) | 200? | Industrias Brasileiras | zoomania | zoomania |
| zoomer | Zoomer (Z-PDA / Z-7000) | 1993 | Casio / Tandy | | |
| zoomer_rtc | Zoomer Real Time Clock | | | | |
| zooo | Zooo (V2.01JA 2004/04/13 12:00) | 2004 | Success | coh3002t | |
| zorba | Zorba (Modular Micros) | 1984? | Modular Micros | | |
| zorba_kbd | Zorba Keyboard | | | | |
| zorro2 | Zorro-II Bus | | | | |
| zorro2_slot | Zorro-II slot | | | | |
| zorroa6 | Zorro (30130611, NSW/ACT) | 2003 | Aristocrat | aristmk6 | |
| zorroa6a | Zorro (20167511, ASP) | 2006 | Aristocrat | zorroa6 | zorroa6 |
| zorroa6u | Zorro (0151372, US) | 2005 | Aristocrat | zorroa6 | zorroa6 |
| zortonbr | Zorton Brothers / Los Justicieros (v1.01) | 1994 | Picmatic | alg_bios | |
| zortonbr_100 | Zorton Brothers / Los Justicieros (v1.00) | 1993 | Picmatic | zortonbr | zortonbr |
| zr36057 | Zoran ZR36057-based Enhanced Multimedia Controller | | | | |
| zr36060 | Zoran ZR36060 Integrated JPEG codec | | | | |
| zr36110 | Zoran ZR36110 mpeg decoder | | | | |
| zrt80 | ZRT-80 | 1982 | Digital Research Computers | | |
| zs01 | Konami ZS01 PIC | | | | |
| zsbc3 | ZSBC-3 | 1980 | Digital Microsystems | | |
| zsg2 | ZOOM ZSG-2 | | | | |
| zsl5500 | Zaurus SL-5500 "Collie" | 2002 | Sharp | | |
| zsl5600 | Zaurus SL-5600 / SL-B500 "Poodle" | 2002 | Sharp | | |
| zslc1000 | Zaurus SL-C3000 "Akita" (Japan) | 200? | Sharp | | |
| zslc3000 | Zaurus SL-C3000 "Spitz" (Japan) | 200? | Sharp | | |
| zslc500 | Zaurus SL-C500 | 2002 | Sharp | | |
| zslc750 | Zaurus SL-C750 "Shepherd" (Japan) | 2003 | Sharp | | |
| zslc760 | Zaurus SL-C760 "Husky" (Japan) | 2004 | Sharp | | |
| zt8802 | ZT-8802 SBC | 1994 | Ziatech | | |
| zuanshi2 | Zuanshi II (version V153A) | 199? | Bordun International | sstar97 | sstar97 |
| zuanshiw | Zuanshi Wutai (V110II) | 1996 | IGS | | |
| zudugo | Zudu-go / 2udu-go | 200? | Macro Winners / Waixing | | |
| zulu | Zulu (Ver. 2.04J, Feb 3 2004) | 2004 | Astro Corp. | zoo | zoo |
| zunknecta | unknown Zanussi / Necta vending machine | 1992 | Zanussi / Necta | | |
| zunkyou | Zunzunkyou no Yabou (Japan) | 1994 | Sega | | |
| zunou | Touch De Zunou (Japan, Rev A) | 2006 | Sega | naomi | |
| zupapa | Zupapa! | 2001 | SNK | neogeo | |
| zupapah8 | Zupapa (Italian gambling game) | 200? | | | |
| zvenezia | Venezia (coffee vending machine) | 1995 | Zanussi / Necta | | |
| zvezda | Zvezda | 1990 | | spectrum | spectrum |
| zwackery | Zwackery | 1984 | Bally Midway | | |
| zx80 | ZX-80 | 1980 | Sinclair Research Ltd | | |
| zx81 | ZX-81 | 1981 | Sinclair Research Ltd | | |
| zx8301 | Sinclair ZX8301 | | | | |
| zx8302 | Sinclair ZX8302 | | | | |
| zx97 | ZX97 | 1997 | Wilf Rigter | zx81 | zx81 |
| zxbus | ZXBUS bus | | | | |
| zxbus_nemoide | Nemo IDE Controller | | | | |
| zxbus_neogs | NeoGS / General Sound | | | | |
| zxbus_slot | ZXBUS slot | | | | |
| zxbus_smuc | SMUC | | | | |
| zzblock | Zun Zun Block | 1979 | Taito | | |
| zzyzzyxx | Zzyzzyxx (set 1) | 1982 | Cinematronics / Advanced Microcomputer Systems | | |
| zzyzzyxx2 | Zzyzzyxx (set 2) | 1982 | Cinematronics / Advanced Microcomputer Systems | zzyzzyxx | zzyzzyxx |
| zzzap_audio | Midway 280-ZZZAP Audio | | | | |
