| MAME Name | Description | Official | Alternate | VC WS | ||
 | jack | Jack the Giantkiller (set 1) | 3.43 MB 06-Aug-2022 Download | - | 6.90 MB 06-Aug-2022 Download | |
 | jackal | Jackal (World, 8-way Joystick) | - | - | 504 kB 06-Aug-2022 Download | |
| jackie | Happy Jackie (v110U) | - | - | 600 kB 19-May-2023 Download | |
 | jackrabt | Jack Rabbit (set 1) | - | - | 548 kB 06-Aug-2022 Download | |
| jailbrek | Jail Break | - | - | 416 kB 06-Aug-2022 Download | |
 | jajamaru | Vs. Ninja Jajamaru Kun (Japan) | - | - | 443 kB 06-Aug-2022 Download | |
 | jankenmn | Janken Man Kattara Ageru | 3.39 MB 06-Aug-2022 Download | - | - | |
| jchan | Jackie Chan - The Kung-Fu Master (rev 4?) | - | - | 215 kB 06-Aug-2022 Download | |
| jchan2 | Jackie Chan in Fists of Fire | - | - | 223 kB 06-Aug-2022 Download | |
| jcross | Jumping Cross (set 1) | - | - | 133 kB 06-Aug-2022 Download | |
 | jdredd | Judge Dredd (Rev C Dec. 17 1997) | - | - | 500 kB 06-Aug-2022 Download | |
| jdreddp | Judge Dredd (rev TA1 7/12/92, location test) | - | - | 289 kB 06-Aug-2022 Download | |
 | jedi | Return of the Jedi | 1.26 MB 06-Aug-2022 Download | - | 911 kB 06-Aug-2022 Download | |
 | jetfight | Jet Fighter/Jet Fighter Cocktail/Launch Aircraft (set 1) | 232 kB 06-Aug-2022 Download | - | - | |
| jitsupro | Jitsuryoku!! Pro Yakyuu (Japan) | - | - | 108 kB 06-Aug-2022 Download | |
 | jjack | Jumping Jack | 4.02 MB 06-Aug-2022 Download | - | 600 kB 06-Aug-2022 Download | |
| jjsquawk | J. J. Squawkers | - | - | 689 kB 19-May-2023 Download | |
| jmpbreak | Jumping Break (set 1) | - | - | 157 kB 06-Aug-2022 Download | |
| jockeygp | Jockey Grand Prix (set 1) | - | - | 275 kB 06-Aug-2022 Download | |
 | joemacr | Joe & Mac Returns (World, Version 1.1, 1994.05.27) | - | - | 787 kB 19-May-2023 Download | |
| joinem | Joinem | - | - | 88.2 kB 06-Aug-2022 Download | |
 | jojo | JoJo's Venture (Europe 990128) | 5.13 MB 06-Aug-2022 Download | - | 6.85 MB 06-Aug-2022 Download | |
 | jojoba | JoJo's Bizarre Adventure (Europe 991015, NO CD) | - | - | 1.59 MB 06-Aug-2022 Download | |
| jokpoker | Joker Poker (Version 16.03B) | - | - | 576 kB 19-May-2023 Download | |
 | jollycrd | Jolly Card (German, set 1) | - | 595 kB 06-Aug-2022 Download | - | |
| jollyjgr | Jolly Jogger | - | - | 241 kB 06-Aug-2022 Download | |
 | jolyjokr | Jolly Joker (98bet, set 1) | - | 595 kB 06-Aug-2022 Download | - | |
 | journey | Journey | 11.1 MB 06-Aug-2022 Download | - | 4.75 MB 06-Aug-2022 Download | |
 | joust | Joust (Green label) | 3.63 MB 06-Aug-2022 Download | - | 476 kB 19-May-2023 Download | |
 | joust2 | Joust 2 - Survival of the Fittest (revision 2) | 3.82 MB 06-Aug-2022 Download | - | 3.58 MB 06-Aug-2022 Download | |
 | joyfulr | Joyful Road (Japan) | - | - | 450 kB 06-Aug-2022 Download | |
 | joyjoy | Puzzled / Joy Joy Kid (NGM-021 ~ NGH-021) | 672 kB 06-Aug-2022 Download | - | 2.48 MB 06-Aug-2022 Download | |
| jpark | Jurassic Park (World, Rev A) | - | - | 366 kB 06-Aug-2022 Download | |
 | jrpacman | Jr. Pac-Man (11/9/83) | 2.10 MB 06-Aug-2022 Download | - | 3.42 MB 06-Aug-2022 Download | |
 | jumpbean | Jumping Beans (0100161V, NSW/ACT) | - | - | 610 kB 06-Aug-2022 Download | |
 | jumpbug | Jump Bug | 56.0 kB 06-Aug-2022 Download | - | 375 kB 06-Aug-2022 Download | |
 | jumpcoas | Jump Coaster (World) | - | - | 463 kB 06-Aug-2022 Download | |
| jumpkids | Jump Kids | - | - | 65.6 kB 06-Aug-2022 Download | |
| jumppop | Jumping Pop (set 1) | - | - | 130 kB 06-Aug-2022 Download | |
| jumpshot | Jump Shot | - | - | 449 kB 06-Aug-2022 Download | |
 | jungleh | Jungle Hunt (US) | - | - | 1.87 MB 06-Aug-2022 Download | |
 | junglek | Jungle King (Japan) | 3.32 MB 06-Aug-2022 Download | - | 547 kB 06-Aug-2022 Download | |
 | jungler | Jungler | - | - | 1.54 MB 06-Aug-2022 Download | |
 | junior | Junior Computer | 3.76 MB 06-Aug-2022 Download | - | - | |
 | junofrst | Juno First | 1.30 MB 06-Aug-2022 Download | - | 583 kB 19-May-2023 Download | |
 | junofrstg | Juno First (Gottlieb) | - | - | 548 kB 19-May-2023 Download | |
