| Name | Description | Year | Manufacturer | Rom | Clone | Sample |
| jak_ths | Triple Header Sports (JAKKS Pacific TV Motion Game) | 2009 | JAKKS Pacific Inc / Super Happy Fun Fun | | | |
| jak_tink | Tinker Bell and the Lost Treasure (JAKKS Pacific TV Motion Game) | 2009 | JAKKS Pacific Inc / Santa Cruz Games | | | |
| jak_tmnthp | Teenage Mutant Ninja Turtles Hero Portal | 200? | JAKKS Pacific Inc | | | |
| jak_totm | Toy Story - Toys on the Move (JAKKS Pacific TV Motion Game) | 200? | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_tsm | Toy Story Mania (JAKKS Pacific TV Game) | 2010 | JAKKS Pacific Inc / Schell Games | | | |
| jak_umdf | Ultimotion - Disney Fairies Sleeping Beauty & TinkerBell (JAKKS Pacific TV Game) | 2008 | JAKKS Pacific Inc / Handheld Games | | | |
| jak_wall | Wall-E (JAKKS Pacific TV Game) (Dec 18 2007 11:34:25) | 2008 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_wdbg | The Walking Dead: Battleground (JAKKS Pacific TV Game) | 2014 | JAKKS Pacific Inc / Super Happy Fun Fun | | | |
| jak_wdzh | The Walking Dead: Zombie Hunter (JAKKS Pacific TV Game) | 2012 | JAKKS Pacific Inc / Merge Interactive | | | |
| jak_wof | Wheel of Fortune (JAKKS Pacific TV Game, Game-Key Ready) (Jul 11 2005 ORIG) | 2005 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_wwe | WWE (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_xmenp | X-Men - Mutant Reign (JAKKS Pacific TV Game, prototype) | 2005 | JAKKS Pacific Inc / Amaze Entertainment | | | |
| jakks_gamekey_rom_i2c_24lc04 | JAKKS Pacific GameKey with I2C 24LC04 | | | | | |
| jakks_gamekey_rom_i2c_base | JAKKS Pacific GameKey with I2C | | | | | |
| jakks_gamekey_rom_plain | JAKKS Pacific GameKey | | | | | |
| jakks_gamekey_slot | JAKKS Pacific Gamekey Slot | | | | | |
| jakms41 | KM-S4-1 VER 1.1 | 199? | Jamicon | | | |
| jaleco_blend | Jaleco Blending Device | | | | | |
| jaleco_ms32_sysctrl | Jaleco MS32 System Control Unit | | | | | |
| jaleco_vj_king_qtaro | Jaleco VJ King Qtaro PCI Device | | | | | |
| jaleco_vj_pc | Jaleco VJ PC | | | | | |
| jaleco_vj_qtaro | Jaleco VJ Qtaro Subboard | | | | | |
| jaleco_vj_sound | VJSlap ISA Sound Card | | | | | |
| jambo | Jambo! Safari (Rev A) | 1999 | Sega | naomi | | |
| jamesb | James Bond (Timed Play) | 1980 | Gottlieb | | | genpin |
| jamesb2 | James Bond (3/5-Ball) | 1980 | Gottlieb | jamesb | jamesb | genpin |
| jaminator | Jaminator | 1990 | Noise Toys Inc. | | | |
| janbari | Mahjong Janjan Baribari (Japan) | 1992 | Nichibutsu / Yubis / AV Japan | | | |
| jangou | Jangou (Japan) | 1983 | Nichibutsu | | | |
| jangou_blitter | Jangou Blitter Custom Chip | | | | | |
| jangtaku | Jang Taku (V 1.3) | 1986 | Dyna Computer | | | |
| janjans1 | Lovely Pop Mahjong JangJang Shimasho (Japan) | 1996 | Visco | | | |
| janjans2 | Lovely Pop Mahjong JangJang Shimasho 2 (Japan) | 2000 | Visco | | | |
| jankenmn | Janken Man Kattara Ageru | 1991 | Sunwise | | | |
| janoh | Jan Oh (set 1) | 1984 | Toaplan | | | |
| janoha | Jan Oh (set 2) | 1984 | Toaplan | janoh | janoh | |
| janptr96 | Janputer '96 (Japan) | 1996 | Dynax | | | |
| janptrsp | Janputer Special (Japan) | 1997 | Dynax | | | |
| janputer | New Double Bet Mahjong (bootleg of Royal Mahjong) | 1981 | bootleg (Paradise Denshi Ltd. / Mes) | | | |
| janshi | Janshi | 1992 | Eagle | | | |
| janshi_vdp | Janshi VDP | | | | | |
| janshin | Janshin Densetsu - Quest of Jongmaster | 1994 | Aicom | neogeo | | |
| janshinp | Mahjong Janshin Plus (Japan) | 1996 | Dynax / Sigma | | | |
| jansou | Jansou (set 1) | 1985 | Dyna Computer | | | |
| jansoua | Jansou (V 1.1) | 1985 | Dyna Computer | jansou | jansou | |
| jantotsu | 4nin-uchi Mahjong Jantotsu | 1983 | Sanritsu | | | |
| jantouki | Jong Tou Ki (Japan) | 1990 | Dynax | | | |
| janyoup2 | Janyou Part II (ver 7.03, July 1 1983) | 1983 | Cosmo Denshi | royalmj | royalmj | |
| janyuki | Jong Yu Ki (Japan) | 1988 | Dynax | | | |
| jarajal | Jyarajyaland (Japan, PlugIt! version) | 2003 | Takara / SSD Company LTD | | | |
| jb_04a | Jack*Bot (0.4A prototype) | 1995 | Williams | jb_10r | jb_10r | |
| jb_10b | Jack*Bot (1.0B) (Belgium/Canada) | 1995 | Williams | jb_10r | jb_10r | |
| jb_10r | Jack*Bot (1.0R) | 1995 | Williams | | | |
| jb3000 | JB-3000 | 1982 | Panasonic | myb3k | myb3k | |
| jb3000_keyboard | JB3000 Keyboard | | | | | |
| jbell | Jingle Bell (v200US) | 1997 | IGS | | | |
| jbell133i | Jingle Bell (Italy, V133I) | 1995? | IGS | jbell | jbell | |
| jbell141ue | Jingle Bell (EU, V141UE) | 1995 | IGS | jbell | jbell | |
| jbell153ue | Jingle Bell (EU, V153UE) | 1997 | IGS | jbell | jbell | |
| jbell155ue | Jingle Bell (EU, V155UE) | 1997 | IGS | jbell | jbell | |
| jbell157us | Jingle Bell (US, V157US) | 1997 | IGS | jbell | jbell | |
| jc1310 | Joincom JC-1310 disk controller | | | | | |
| jchan | Jackie Chan - The Kung-Fu Master (rev 4?) | 1995 | Kaneko | | | |
| jchan2 | Jackie Chan in Fists of Fire | 1995 | Kaneko | | | |
| jchana | Jackie Chan - The Kung-Fu Master (rev 3?) | 1995 | Kaneko | jchan | jchan | |
| jclub2bl | Jockey Club II (USA v4.00, bootleg) | 1997 | bootleg | jclub2v112 | jclub2v112 | |
| jclub2v100 | Jockey Club II (v1.00, older hardware) | 1994 | Seta | jclub2v112 | jclub2v112 | |
| jclub2v101 | Jockey Club II (v1.01, older hardware) | 1995 | Seta | jclub2v112 | jclub2v112 | |
| jclub2v110 | Jockey Club II (v1.10X, older hardware) | 1996 | Seta | jclub2v112 | jclub2v112 | |
| jclub2v112 | Jockey Club II (v1.12X, older hardware) | 1996 | Seta | | | |
| jclub2v200 | Jockey Club II (v2.00, newer hardware) | 1996 | Seta | jclub2v112 | jclub2v112 | |
| jclub2v201 | Jockey Club II (v2.01X, newer hardware) | 1996 | Seta | jclub2v112 | jclub2v112 | |
| jclub2v203 | Jockey Club II (v2.03X RC, older hardware, prototype) | 1997 | Seta | jclub2v112 | jclub2v112 | |
| jclub2v204 | Jockey Club II (v2.04, newer hardware) | 1997 | Seta | jclub2v112 | jclub2v112 | |
| jclub2v205 | Jockey Club II (v2.05, newer hardware) | 1997 | Seta | jclub2v112 | jclub2v112 | |
| jclub2v220 | Jockey Club II (v2.20X, newer hardware) | 1998 | Seta | jclub2v112 | jclub2v112 | |
| jcross | Jumping Cross (set 1) | 1984 | SNK | | | |
| jcrossa | Jumping Cross (set 2) | 1984 | SNK | jcross | jcross | |
| jd_l1 | Judge Dredd (L-1) | 1993 | Bally | jd_l7 | jd_l7 | |
| jd_l4 | Judge Dredd (L-4) | 1993 | Bally | jd_l7 | jd_l7 | |
| jd_l5 | Judge Dredd (L-5) | 1993 | Bally | jd_l7 | jd_l7 | |
| jd_l6 | Judge Dredd (L-6) | 1993 | Bally | jd_l7 | jd_l7 | |
| jd_l7 | Judge Dredd (L-7) | 1993 | Bally | | | |
| jd800 | JD-800 Programmable Synthesizer | 1991 | Roland | | | |
| jdredd | Judge Dredd (Rev C Dec. 17 1997) | 1996 | Acclaim | coh1000a | | |
| jdreddb | Judge Dredd (Rev B Nov. 26 1997) | 1996 | Acclaim | jdredd | jdredd | |
| jdreddp | Judge Dredd (rev TA1 7/12/92, location test) | 1993 | Midway | | | |
| jedi | Return of the Jedi | 1984 | Atari | | | |
| jefffox | You Might Be A Redneck If... - Jeff Foxworthy (0351068, US) | 2003 | Aristocrat | aristmk6 | | |
| jesterch | Jester Chance (dual 6809 GI Australasia PCB) | 1987 | Tranex Australia Pty Ltd. | | | |
| jestmagi | Jester Magic (Konami Endeavour, Russia) | 200? | Konami | konendev | | |
| jet | JET | 1990 | Electromagnetica | spectrum | spectrum | |
| jetfight | Jet Fighter/Jet Fighter Cocktail/Launch Aircraft (set 1) | 1975 | Atari | | | |
| jetfighta | Jet Fighter/Jet Fighter Cocktail/Launch Aircraft (set 2) | 1975 | Atari | jetfight | jetfight | |
| jetwave | Jet Wave (EAB, Euro v1.04) | 1996 | Konami | | | |
| jetwavej | Jet Wave (JAB, Japan v1.04) | 1996 | Konami | jetwave | jetwave | |
| jeuint | Jeu Intéractif TV (France) | 2007 | Taikee / V-Tac | ordentv | ordentv | |
| jewelcm | Jewel of the Enchantress - Mr. Cashman (0151051, US) | 2003 | Aristocrat | aristmk6 | | |
| jgakuen | Shiritsu Justice Gakuen: Legion of Heroes (Japan 971216) | 1997 | Capcom | rvschool | rvschool | |
| jgakuen1 | Shiritsu Justice Gakuen: Legion of Heroes (Japan 971117) | 1997 | Capcom | rvschool | rvschool | |
| jigkmgri | Jigoku Meguri (Japan, rev 1) | 1988 | Taito Corporation | bonzeadv | bonzeadv | |
| jigkmgria | Jigoku Meguri (Japan) | 1988 | Taito Corporation | bonzeadv | bonzeadv | |
| jin | Jin | 1982 | Falcon | | | |
| jingling | Jingling Jiazu Genie 2000 | 2000 | IBS Co. Ltd | puckpkmn | puckpkmn | |
| jingystm | Jingi Storm - The Arcade (Japan) (GDL-0037) | 2006 | Atrativa Japan | naomigd | | |
| jinhulu2 | Jin Hu Lu 2 (v412GS) | 1995 | IGS | | | |
| jitsupro | Jitsuryoku!! Pro Yakyuu (Japan) | 1989 | Jaleco | | | |
| jituroku | Jitsuroku Maru-chi Mahjong (Japan) | 1993 | Windom | | | |
| jjack | Jumping Jack | 1984 | Universal | | | |
| jjparad2 | Jan Jan Paradise 2 | 1997 | Electro Design | skns | | |
| jjparads | Jan Jan Paradise | 1996 | Electro Design | skns | | |
| jjpoker | Jackpot Joker Poker (set 1) | 1983 | Enter-Tech, Ltd. | | | |
| jjpokerb | Jackpot Joker Poker (set 2) | 1983 | Enter-Tech, Ltd. | jjpoker | jjpoker | |
| jjsquawk | J. J. Squawkers | 1993 | Athena / Able | | | |
| jjsquawkb | J. J. Squawkers (bootleg) | 1999 | bootleg | jjsquawk | jjsquawk | |
| jjsquawkb2 | J. J. Squawkers (bootleg, Blandia Conversion) | 1999 | bootleg | jjsquawk | jjsquawk | |
| jjsquawko | J. J. Squawkers (older) | 1993 | Athena / Able | jjsquawk | jjsquawk | |
| jjstrip | Club Jenna Presents: Jenna Jameson's Strip Poker | 200? | Shiggles Inc. | | | |
| jking02 | Jungle King 2002 (V209US) | 2001 | IGS | | | |
| jking103a | Jungle King (V103A) | 2000? | IGS | starzan | starzan | |
| jking302us | Jungle King (V302US) | 2000? | IGS | | | |
| jkrmast | Joker Master 2000 Special Edition (V515) | 1998 | Pick-A-Party USA | | | |
| jkrmasta | Joker Master 2000 Special Edition (V512) | 1998 | Pick-A-Party USA | jkrmast | jkrmast | |
| jl2050 | Cyber Console Center 200-in-1 (JL2050) | 200? | LexiBook / JungleTac / NiceCode | | | |
| jlasvegas | Las Vegas (Jeutel, set 1) | 198? | Jeutel | | | |
| jlasvegasa | Las Vegas (Jeutel, set 2) | 198? | Jeutel | jlasvegas | jlasvegas | |
| jleague | The J.League 1994 (Japan, Rev A) | 1994 | Sega | svf | svf | |
| jleagueo | The J.League 1994 (Japan) | 1994 | Sega | svf | svf | |
| jm_05r | Johnny Mnemonic (0.5R) | 1995 | Williams | jm_12r | jm_12r | |
| jm_12b | Johnny Mnemonic (1.2B) Belgium | 1995 | Williams | jm_12r | jm_12r | |
| jm_12r | Johnny Mnemonic (1.2R) | 1995 | Williams | | | |
| jmbx1 | JMB-X1 "Sound Board X" | | | | | |
| jmpbreak | Jumping Break (set 1) | 1999 | F2 System | | | |
| jmpbreaka | Jumping Break (set 2) | 1999 | F2 System | jmpbreak | jmpbreak | |
| jnero | Johnny Nero Action Hero (v01.01.08) | 2004 | ICE/Play Mechanix | | | |
| jngld_l1 | Jungle Lord (L-1) | 1981 | Williams | jngld_l2 | jngld_l2 | genpin |
| jngld_l2 | Jungle Lord (L-2) | 1981 | Williams | | | genpin |
| jngolady | Jangou Lady (Japan) | 1984 | Nichibutsu | | | |
| jockeyc | Jockey Club (v1.18) | 1990 | Seta (Visco license) | | | |
| jockeygp | Jockey Grand Prix (set 1) | 2001 | Sun Amusement / BrezzaSoft | neogeo | | |
| jockeygpa | Jockey Grand Prix (set 2) | 2001 | Sun Amusement / BrezzaSoft | jockeygp | jockeygp | |
| joemac | Tatakae Genshizin Joe & Mac (Japan ver 1) | 1991 | Data East Corporation | cninja | cninja | |
| joemacr | Joe & Mac Returns (World, Version 1.1, 1994.05.27) | 1994 | Data East Corporation | | | |
| joemacra | Joe & Mac Returns (World, Version 1.0, 1994.05.19) | 1994 | Data East Corporation | joemacr | joemacr | |
| joemacrj | Joe & Mac Returns (Japan, Version 1.2, 1994.06.06) | 1994 | Data East Corporation | joemacr | joemacr | |
| jogakuen | Mahjong Jogakuen (Japan) | 1992? | Windom | | | |
| joinem | Joinem | 1983 | Global Corporation | | | |
| jojo | JoJo's Venture (Europe 990128) | 1998 | Capcom | | | |
| jojoa | JoJo's Venture (Asia 990128) | 1998 | Capcom | jojo | jojo | |
| jojoar1 | JoJo's Venture (Asia 990108) | 1998 | Capcom | jojo | jojo | |
| jojoar2 | JoJo's Venture (Asia 981202) | 1998 | Capcom | jojo | jojo | |
| jojoba | JoJo's Bizarre Adventure (Europe 991015, NO CD) | 1999 | Capcom | | | |
| jojobajr1 | JoJo no Kimyou na Bouken: Mirai e no Isan (Japan 990927) | 1999 | Capcom | jojoba | jojoba | |
| jojobajr2 | JoJo no Kimyou na Bouken: Mirai e no Isan (Japan 990913) | 1999 | Capcom | jojoba | jojoba | |
| jojoban | JoJo no Kimyou na Bouken: Mirai e no Isan (Japan 991015, NO CD) | 1999 | Capcom | jojoba | jojoba | |
| jojobaner1 | JoJo's Bizarre Adventure (Europe 990927, NO CD) | 1999 | Capcom | jojoba | jojoba | |
| jojobaner2 | JoJo's Bizarre Adventure (Europe 990913, NO CD) | 1999 | Capcom | jojoba | jojoba | |
| jojobanr1 | JoJo no Kimyou na Bouken: Mirai e no Isan (Japan 990927, NO CD) | 1999 | Capcom | jojoba | jojoba | |
| jojobanr2 | JoJo no Kimyou na Bouken: Mirai e no Isan (Japan 990913, NO CD) | 1999 | Capcom | jojoba | jojoba | |
| jojobar1 | JoJo's Bizarre Adventure (Europe 990927) | 1999 | Capcom | jojoba | jojoba | |
| jojobar2 | JoJo's Bizarre Adventure (Europe 990913) | 1999 | Capcom | jojoba | jojoba | |
| jojoj | JoJo no Kimyou na Bouken (Japan 990128) | 1998 | Capcom | jojo | jojo | |
| jojojr1 | JoJo no Kimyou na Bouken (Japan 990108) | 1998 | Capcom | jojo | jojo | |
| jojojr2 | JoJo no Kimyou na Bouken (Japan 981202) | 1998 | Capcom | jojo | jojo | |
| jojon | JoJo's Venture (Asia 990128, NO CD) | 1998 | Capcom | jojo | jojo | |
| jojonr1 | JoJo's Venture (Asia 990108, NO CD) | 1998 | Capcom | jojo | jojo | |
| jojonr2 | JoJo's Venture (Asia 981202, NO CD) | 1998 | Capcom | jojo | jojo | |
| jojor1 | JoJo's Venture (Europe 990108) | 1998 | Capcom | jojo | jojo | |
| jojor2 | JoJo's Venture (Europe 981202) | 1998 | Capcom | jojo | jojo | |
| jojou | JoJo's Venture (USA 990128) | 1998 | Capcom | jojo | jojo | |
| jojour1 | JoJo's Venture (USA 990108) | 1998 | Capcom | jojo | jojo | |
| jojour2 | JoJo's Venture (USA 981202) | 1998 | Capcom | jojo | jojo | |
| jokcrdep | Joker Card / Multi Card (Epoxy brick CPU) | 1991 | Fun World | | | |
| jokercar | Joker Card (witch game) | 199? | <unknown> | witchcrd | witchcrd | |
| jokercrd | Joker Card 300 (Ver.A267BC, encrypted) | 1993 | Amatic Trading | | | |
| jokpoker | Joker Poker (Version 16.03B) | 1982 | Greyhound Electronics | | | |
| jokpokera | Joker Poker (Version 16.03BI 5-10-85, Joker Poker ICB 9-30-86) | 1983 | Greyhound Electronics | jokpoker | jokpoker | |
| jokpokerb | Joker Poker (Version 16.04BI 10-19-88, Joker Poker ICB 9-30-86) | 1983 | Greyhound Electronics | jokpoker | jokpoker | |
| jokpokerc | Joker Poker (Version 16.03BI 5-10-85, Poker No Raise ICB 9-30-86) | 1983 | Greyhound Electronics | jokpoker | jokpoker | |
| jokrlady | Joker Lady | 1995? | Videos A A | | | |
| jokrpokr | Joker Poker | 1978 | Gottlieb | gts1 | | genpin |
| jokrwild | Joker's Wild (encrypted) | 1988 | Sigma | | | |
| jokrz_g4 | Jokerz! (G-4) | 1989 | Williams | jokrz_l6 | jokrz_l6 | genpin |
| jokrz_l3 | Jokerz! (L-3) | 1989 | Williams | jokrz_l6 | jokrz_l6 | genpin |
| jokrz_l6 | Jokerz! (L-6) | 1989 | Williams | | | genpin |
| jollycrd | Jolly Card (German, set 1) | 1985 | TAB Austria | | | |
| jollycrda | Jolly Card (German, set 2) | 1985 | TAB Austria | jollycrd | jollycrd | |
| jollyjgr | Jolly Jogger | 1982 | Taito Corporation | | | |
| jolyc3x3 | Jolly Card (3x3 deal) | 1985 | TAB Austria | jollycrd | jollycrd | |
| jolyc980 | Jolly Card Professional 2.0 (Spale Soft) | 2000 | Spale Soft | jollycrd | jollycrd | |
| jolyccra | Jolly Card (Croatian, set 1) | 1985 | TAB Austria | jollycrd | jollycrd | |
| jolyccrb | Jolly Card (Croatian, set 2) | 1993 | Soft Design | jollycrd | jollycrd | |
| jolycdab | Jolly Card (German, Fun World, bootleg) | 1986 | Inter Games | jollycrd | jollycrd | |
| jolycdcy | Zabavni Karti (Bulgarian, cyrillic, encrypted) | 1993 | bootleg (Cleco) | jollycrd | jollycrd | |
| jolycdev | Jolly Card (Evona Electronic) | 1998 | TAB Austria / Evona Electronic | jollycrd | jollycrd | |
| jolycdib | Jolly Card (Italian, encrypted bootleg, set 1) | 1990 | bootleg | jollycrd | jollycrd | |
| jolycdic | Jolly Card (Italian, encrypted bootleg, set 2) | 1993 | bootleg | jollycrd | jollycrd | |
| jolycdid | Jolly Card (Italian, different colors, set 1) | 1990 | bootleg | jollycrd | jollycrd | |
| jolycdie | Jolly Card (Italian, different colors, set 2) | 1990 | bootleg | jollycrd | jollycrd | |
| jolycdif | Jolly Card (Italian, bootleg, set 1) | 1990 | bootleg | jollycrd | jollycrd | |
| jolycdig | Jolly Card (Italian, bootleg, set 2) | 1993 | bootleg | jollycrd | jollycrd | |
| jolycdih | Jolly Card (Italian, bootleg, set 3) | 1990 | bootleg | jollycrd | jollycrd | |
| jolycdii | Jolly Card (Italian, encrypted bootleg, set 3) | 1993 | bootleg (Cleco) | jollycrd | jollycrd | |
| jolycdit | Jolly Card (Italian, blue TAB board, encrypted) | 199? | bootleg | jollycrd | jollycrd | |
| jolycdsp | Jolly Card (Spanish, blue TAB board, encrypted) | 1992 | TAB Austria | jollycrd | jollycrd | |
| jolycmzs | Jolly Card Professional 2.0 (MZS Tech) | 1993 | MZS Tech | jollycrd | jollycrd | |
| jolygame | Jolly Game (V1, Otti Karl logo) | 1993 | bootleg | jollycrd | jollycrd | |
| jolyjokr | Jolly Joker (98bet, set 1) | 199? | Impera | | | |
| jolyjokra | Jolly Joker (98bet, set 2) | 199? | Impera | jolyjokr | jolyjokr | |
| jolyjokrb1 | Jolly Joker (40bet, higher paytable) | 199? | Impera | jolyjokr | jolyjokr | |
| jolyjokrb2 | Jolly Joker (40bet, lower paytable) | 199? | Impera | jolyjokr | jolyjokr | |
| jolyjokrc | Jolly Joker (Apple Time) | 199? | Apple Time | jolyjokr | jolyjokr | |
| jolyjokrm | Jolly Joker (Solid State module in suicide board) | 199? | Impera | jolyjokr | jolyjokr | |
| jolyjokro | Jolly Joker (original program, interleaved GFX, Impera logo) | 199? | Impera | jolyjokr | jolyjokr | |
| jolyjokrp | Jolly Joker (original program, interleaved GFX, no logo) | 199? | Impera | jolyjokr | jolyjokr | |
| jolyjokrs | Jolly Joker (original program, interleaved GFX, Otti Karl logo, set 1) | 199? | Impera | jolyjokr | jolyjokr | |
| jolyjokrt | Jolly Joker (original program, interleaved GFX, Otti Karl logo, set 2) | 199? | Impera | jolyjokr | jolyjokr | |
| jolypark | Jolly Park | 1996 | Spinball | | | genpin |
| jongbou | Mahjong Block Jongbou (Japan) | 1987 | SNK | | | |
| jongbou2 | Mahjong Block Jongbou 2 (Japan) | 1987 | SNK | | | |
| jongkyo | Jongkyo | 1985 | Kiwako | | | |
| jongpute | Jongputer | 1981 | Alpha Denshi Co. | | | |
| jongshin | Jong Shin (Japan) | 1986 | Dyna Electronics | | | |
| jongtei | Mahjong Jong-Tei (Japan, NM532-01) | 1999 | Dynax | | | |
| jongteia | Mahjong Jong-Tei (Japan, Techno-Top license) | 2000 | Dynax (Techno-Top license) | jongtei | jongtei | |
| jonos | Escort | 198? | Jonos | | | |
| jopac | Jopac JO7400 (France) | 1983 | Philips (Brandt license) | videopacp | videopacp | |
| jorn720 | Jornada 720 | 2000 | Hewlett Packard | | | |
| josvolly | Joshi Volleyball | 1983 | Allumer / Taito Corporation | | | |
| jouet | 10 Jeux Interactifs / Jeux Pour Filles (France) | 200? | <unknown> | | | |
| journey | Journey | 1983 | Bally Midway | | | journey |
| joust | Joust (Green label) | 1982 | Williams | | | |
| joust2 | Joust 2 - Survival of the Fittest (revision 2) | 1986 | Williams | | | |
| joust2r1 | Joust 2 - Survival of the Fittest (revision 1) | 1986 | Williams | joust2 | joust2 | |
| joustr | Joust (Red label) | 1982 | Williams | joust | joust | |
| jousty | Joust (Yellow label) | 1982 | Williams | joust | joust | |
| joyfulr | Joyful Road (Japan) | 1983 | SNK | | | |
| joyjoy | Puzzled / Joy Joy Kid (NGM-021 ~ NGH-021) | 1990 | SNK | neogeo | | |
| joyman | Joyman | 1982 | hack | puckman | puckman | |
| joypad65 | Joypad 65 | 200? | WinFun / JungleTac | | | |
| joystand | Joy Stand Private | 1997 | Yuvo | | | |
| joysti30 | Joystick 30 | 200? | WinFun / JungleTac | | | |
| jpark | Jurassic Park (World, Rev A) | 1993 | Sega | | | |
| jpark3 | Jurassic Park III (ver EBC) | 2001 | Konami | kviper | | |
| jpark3u | Jurassic Park III (ver UBC) | 2001 | Konami | jpark3 | jpark3 | |
| jparkj | Jurassic Park (Japan, Rev A, Deluxe) | 1993 | Sega | jpark | jpark | |
| jparkja | Jurassic Park (Japan, Deluxe) | 1993 | Sega | jpark | jpark | |
| jparkjc | Jurassic Park (Japan, Rev A, Conversion) | 1993 | Sega | jpark | jpark | |
| jparkmb | Jurassic Park (bootleg of Mega Drive version) | 1993 | bootleg / Sega | | | |
| jpcoin | Joker Poker (Coinmaster set 1) | 1985 | Coinmaster | | | |