| Name | Description | Year | Manufacturer | Rom | Clone | Sample |
| j7fantaz | Fantaztec (JPM) | 200? | JPM | | | |
| j7kerchn | Ker - Chinq (JPM) | 200? | JPM | | | |
| j7r2roll | Ready To Roll (JPM) | 200? | JPM | | | |
| j7razzma | Razzamataz (JPM) (set 1) | 200? | JPM | | | |
| j7razzmaa | Razzamataz (JPM) (set 2) | 200? | JPM | j7razzma | j7razzma | |
| j7tubgld | Turbo Gold (JPM) | 200? | JPM | | | |
| j7wldwkd | Wild 'N' Wicked (JPM) | 200? | JPM | | | |
| j80alad | Aladdin's Cave (PCP) | 198? | JPM | | | |
| j80bac | Bank A Coin (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80blbnk | Blankity Bank (PCP) (SYSTEM80) | 198? | PCP | | | |
| j80bounc | Bouncer (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80fortr | Fortune Trail (JPM) | 198? | JPM | | | |
| j80frogh | Frog Hop (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80fruit | Fruit Snappa (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80golds | Golden Steppa (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80hotln | Hot Lines (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80mster | Masterspy (Pcp) | 198? | JPM | | | |
| j80myspn | Mystery Spin (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80nudg2 | Nudge Double Up MkII (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80plsnd | Plus Nudge (JPM) | 198? | JPM | | | |
| j80rr | Road Runner (JPM) (SYSTEM80, set 1) | 198? | JPM | | | |
| j80rra | Road Runner (JPM) (SYSTEM80, set 2) | 198? | JPM | j80rr | j80rr | |
| j80supbk | Superbank (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80supst | Supa Steppa (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80topsp | Top Sprint (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80topup | Top Up (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80tumbl | Tumble (JPM) (SYSTEM80) | 198? | JPM | | | |
| j80wsprt | Winsprint (JPM) (V4, 5x20p) (SYSTEM80) | 198? | JPM | | | |
| j80wsprt2 | Winsprint (JPM) (V2, 10x10p) (SYSTEM80) | 198? | JPM | j80wsprt | j80wsprt | |
| j80wsprt3 | Winsprint (JPM) (V3, 50p, 5 credits) (SYSTEM80) | 198? | JPM | j80wsprt | j80wsprt | |
| jack | Jack the Giantkiller (set 1) | 1982 | Hara Industries (Cinematronics license) | | | |
| jack2 | Jack the Giantkiller (set 2) | 1982 | Hara Industries (Cinematronics license) | jack | jack | |
| jack2opn | Jacks to Open | 1984 | Gottlieb | | | genpin |
| jack3 | Jack the Giantkiller (set 3) | 1982 | Hara Industries (Cinematronics license) | jack | jack | |
| jackal | Jackal (World, 8-way Joystick) | 1986 | Konami | | | |
| jackalbl | Jackal (bootleg, Rotary Joystick) | 1986 | bootleg | jackal | jackal | |
| jackalj | Tokushu Butai Jackal (Japan, 8-way Joystick) | 1986 | Konami | jackal | jackal | |
| jackalr | Jackal (World, Rotary Joystick) | 1986 | Konami | jackal | jackal | |
| jackbean | Jack & The Beanstalk (Doyle & Assoc.?) | 199? | Doyle & Assoc. | | | |
| jackhous | Jack House | 1994 | Chain Leisure Co., Ltd | | | |
| jackie | Happy Jackie (v110U) | 1993 | IGS | | | |
| jackler | Jackler (bootleg of Jungler) | 1982 | bootleg | jungler | jungler | |
| jackpool | Jackpot Cards / Jackpot Pool (Italy) | 1997 | Electronic Projects | | | |
| jackpot | Jackpot Bowling (Ver 16.16L) | 1998 | Electronic Projects | | | |
| jackpota | Jackpot Bowling (Ver 1.16L) | 1998 | Electronic Projects | jackpot | jackpot | |
| jackrabt | Jack Rabbit (set 1) | 1984 | Zaccaria | | | |
| jackrabt2 | Jack Rabbit (set 2) | 1984 | Zaccaria | jackrabt | jackrabt | |
| jackrabts | Jack Rabbit (special) | 1984 | Zaccaria | jackrabt | jackrabt | |
| jackuse | Jack Use (Jackpot settings for Interflip slots machines) | 1982 | Interflip | | | ifslots |
| jackvent | Jack's Venture - Inca Treasure | 2012 | Astro Corp. | | | |
| jade | unknown S-100 computer with Serial/Parallel/Interrupt Controller | 1983 | Jade Computer Products | | | |
| jag_blitter | Atari Jaguar Blitter | | | | | |
| jaguar | Jaguar (NTSC) | 1993 | Atari | | | |
| jaguarcd | Jaguar CD (NTSC) | 1995 | Atari | jaguar | jaguar | |
| jaguardsp | Motorola Atari Jaguar DSP "Jerry" | | | | | |
| jaguargpu | Motorola Atari Jaguar GPU "Tom" | | | | | |
| jailbrek | Jail Break | 1986 | Konami | | | |
| jailbrekb | Jail Break (bootleg) | 1986 | bootleg | jailbrek | jailbrek | |
| jailbrk | Jailbreak (10125611, NSW/ACT) | 2002 | Aristocrat | aristmk6 | | |
| jajamaru | Vs. Ninja Jajamaru Kun (Japan) | 1985 | Jaleco | | | |
| jak_batm | The Batman (JAKKS Pacific TV Game) | 2004 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_bbh | Big Buck Hunter Pro (JAKKS Pacific TV Game) | 2009 | JAKKS Pacific Inc | | | |
| jak_bbsf | Big Buck Safari (JAKKS Pacific TV Game) | 2011 | JAKKS Pacific Inc | | | |
| jak_bobb | Bob the Builder - Project: Build It (JAKKS Pacific TV Game) (JUN 2 2006 14:42:01) | 2006 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_camp | Camp Rock - Guitar Video Game (JAKKS Pacific TV Game) | 2008 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_capb | Classic Arcade Pinball (JAKKS Pacific TV Game) | 2004 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_capc | Capcom 3-in-1 (1942, Commando, Ghosts'n Goblins) (JAKKS Pacific TV Game, Game-Key Ready) (29 MAR 2005 B) | 2005 | JAKKS Pacific Inc / Capcom / HotGen Ltd | | | |
| jak_car2 | Cars 2 (JAKKS Pacific TV Game) | 200? | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_care | Care Bears TV Games (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / Backbone Entertainment | | | |
| jak_dbz | Dragon Ball Z (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / Handheld Games | | | |
| jak_dchp | DC Super Heroes The Watchtower Hero Portal | 200? | JAKKS Pacific Inc | | | |
| jak_ddhp | DreamWorks Dragons Hero Portal | 200? | JAKKS Pacific Inc | | | |
| jak_disf | Disney Friends (JAKKS Pacific TV Game, Game-Key Ready) (17 MAY 2005 A) | 2005 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_disn | Disney (JAKKS Pacific TV Game, Game-Key Ready) (08 FEB 2005 A) | 2005 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_dora | Dora the Explorer - Nursery Rhyme Adventure (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / Handheld Games | | | |
| jak_dorr | Dora the Explorer - Race to Play Park (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / Handheld Games | | | |
| jak_dpr | Disney Princess (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / 5000ft, Inc | | | |
| jak_dprs | Disney Princesses (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / 5000ft, Inc | | | |
| jak_duck | Duck Commander (JAKKS Pacific TV Game) | 2013 | JAKKS Pacific Inc / Merge Interactive | | | |
| jak_dwmn | Dreamworks Movie Night (JAKKS Pacific TV Game, Oct 18 2006, prototype) | 2006 | JAKKS Pacific Inc / Amaze Entertainment | | | |
| jak_dwmno | Dreamworks Movie Night (JAKKS Pacific TV Game, Apr 24 2006, test program) | 2006 | JAKKS Pacific Inc / Amaze Entertainment | jak_dwmn | jak_dwmn | |
| jak_fan4 | Fantastic Four (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / Digital Eclipse | | | |
| jak_gtg | Golden Tee Golf (JAKKS Pacific TV Game) | 2011 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_hmg2 | Hannah Montana G2 Deluxe - All in One (JAKKS Pacific TV Game) | 2008 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_hmhsm | Hannah Montana G2 Deluxe / High School Musical G2 Deluxe - Two in One (JAKKS Pacific TV Game) | 2008 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_hmpt | Hannah Montana Pop Tour - Guitar Video Game (JAKKS Pacific TV Game) (May 16 2008) | 2008 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_hsmg2 | High School Musical G2 Deluxe - All in One (JAKKS Pacific TV Game) | 2008 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_just | Justice League (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / Taniko | | | |
| jak_mk | Mortal Kombat (JAKKS Pacific TV Game) | 2004 | JAKKS Pacific Inc / Digital Eclipse | | | |
| jak_mpac | Ms. Pac-Man 5-in-1 (Ms. Pac-Man, Pole Position, Galaga, Xevious, Mappy) (JAKKS Pacific TV Game, Game-Key Ready) (07 FEB 2005 A SKU F) | 2005 | JAKKS Pacific Inc / Namco / HotGen Ltd | | | |
| jak_mpacw | Ms. Pac-Man 7-in-1 (Wireless) (Ms. Pac-Man, Pole Position, Galaga, Xevious, Mappy, New Rally X, Bosconian) (18 AUG 2004 A) | 2004 | JAKKS Pacific Inc / Namco / HotGen Ltd | | | |
| jak_nick | Nicktoons (JAKKS Pacific TV Game, Game-Key Ready) | 2004 | JAKKS Pacific Inc / Handheld Games | | | |
| jak_pf | Phineas and Ferb: Best Game Ever! (JAKKS Pacific TV Motion Game) | 2010 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_pix | Disney Pixar Classics (JAKKS Pacific TV Game) | 2006 | JAKKS Pacific Inc / Handheld Games | | | |
| jak_pooh | Winnie the Pooh - Piglet's Special Day (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / Backbone Entertainment | | | |
| jak_potc | Pirates of the Caribbean - Islands of Fortune (JAKKS Pacific TV Game) (Jun 1 2007 12:34:28) | 2007 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_powr | Power Rangers S.P.D. (JAKKS Pacific TV Game) | 2005 | JAKKS Pacific Inc / Handheld Games | | | |
| jak_prft | Power Rangers Force In Time (JAKKS Pacific TV Motion Game) | 2009 | JAKKS Pacific Inc / Santa Cruz Games | | | |
| jak_prhp | Power Rangers Super Megaforce Hero Portal | 200? | JAKKS Pacific Inc | | | |
| jak_prr | Power Rangers to the Rescue (JAKKS Pacific TV Game) (Aug 8 2008 16:46:59) | 2008 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_s500 | SpongeBob SquarePants Bikini Bottom 500 (JAKKS Pacific TV Motion Game) | 2009 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_sbfc | SpongeBob SquarePants - The Fry Cook Games (JAKKS Pacific TV Game, Game-Key Ready) (AUG 18 2005 21:31:56) | 2005 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_sbjd | SpongeBob SquarePants Jellyfish Dodge (JAKKS Pacific TV Game) (Apr 5 2007) | 2007 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_sdoo | Scooby-Doo! and the Mystery of the Castle (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / Jolliford Management | | | |
| jak_sith | Star Wars - Revenge of the Sith (JAKKS Pacific TV Game, Game-Key Ready) | 2005 | JAKKS Pacific Inc / Griptonite Games | | | |
| jak_sithp | Star Wars - Revenge of the Sith (JAKKS Pacific TV Game, Game-Key Ready, prototype) | 2005 | JAKKS Pacific Inc / Griptonite Games | jak_sith | jak_sith | |
| jak_smwm | Spider-Man Web Master (JAKKS Pacific TV Motion Game) | 2009 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_spd3 | Spider-Man 3 (JAKKS Pacific TV Game) | 2007 | JAKKS Pacific Inc / Handheld Games | | | |
| jak_spdm | Spider-Man (JAKKS Pacific TV Game, Game-Key Ready) | 2004 | JAKKS Pacific Inc / Digital Eclipse | | | |
| jak_spdmo | Spider-Man (JAKKS Pacific TV Game) (older hardware, set 1) | 2004 | JAKKS Pacific Inc / Digital Eclipse | jak_spdm | jak_spdm | |
| jak_spdmoa | Spider-Man (JAKKS Pacific TV Game) (older hardware, set 2) | 2004 | JAKKS Pacific Inc / Digital Eclipse | jak_spdm | jak_spdm | |
| jak_spmm | The Amazing Spider-Man and The Masked Menace (JAKKS Pacific TV Game) | 2008 | JAKKS Pacific Inc / Santa Cruz Games | | | |
| jak_sspop | Sing Scene Pop (JAKKS Pacific TV Game) | 2009 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_supm | Superman in Super Villain Showdown (JAKKS Pacific TV Game) (26 Jan 2006 A) | 2006 | JAKKS Pacific Inc / HotGen Ltd | | | |
| jak_swbstrik | Star Wars Blaster Strike | 200? | JAKKS Pacific Inc | | | |
| jak_swc | Star Wars Clone Trooper (JAKKS Pacific TV Game) | 2013 | JAKKS Pacific Inc / Merge Interactive | | | |
| jak_swot | Star Wars - Original Trilogy (JAKKS Pacific TV Game, prototype) | 2006 | JAKKS Pacific Inc / Amaze Entertainment | | | |
| 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 | | | |
| jankmg2 | Janken Man Ganso 2 | 199? | Sunwise | | | |
| janoh | Jan Oh (set 1) | 1984 | Toaplan | | | |
| janoha | Jan Oh (set 2) | 1984 | Toaplan | janoh | janoh | |
| janohb | Jan Oh (set 3) | 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, set 1) | 1981 | bootleg (Paradise Denshi Ltd. / Mes) | | | |
| janputera | New Double Bet Mahjong (bootleg of Royal Mahjong, set 2) | 1981 | bootleg (Paradise Denshi Ltd. / Ever Denshi) | janputer | janputer | |
| 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 | |
| janyoup2702 | Janyou Part II (ver 7.02, July 1 1983) | 1983 | Cosmo Denshi | royalmj | royalmj | |
| janyoup2a | Janyou Part II (ver 7.03, July 1 1983, no title screen) | 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 | | | |
| jd363 | Picky Talk - Super Denshi Techou | 1995 | Casio | | | |
| jd364 | Color Picky Talk - Super Denshi Techou | 1995 | Casio | | | |
| jd368 | Super Picky Talk - Access Pet | 1997? | Casio | | | |
| 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 | |
| jhzb | Jin Hua Zhengba (V113CN) | 200? | IGS | | | |
| 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 | | |
| jinhuang | Jin Huang Guan | 2002 | IGS | | | |
| jinhulu2 | Jin Hu Lu II (v412GS) | 1995 | IGS | | | |
| jinhulu2100gi | Jin Hu Lu II (v100GI) | 1995 | IGS | jinhulu2 | jinhulu2 | |
| jinhulu2101is | Jin Hu Lu II (v101IS) | 1996 | IGS | jinhulu2 | jinhulu2 | |
| jinhulu2120gi | Jin Hu Lu II (v120GI) | 1995 | IGS | jinhulu2 | jinhulu2 | |
| jinpaish | Jinpai Suoha - Show Hand (Chinese version 2004-09-22) | 2004 | GMS | | | |
| jinsanse | Jin Sanse | 1998? | Sealy | | | |
| 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. | | | |