| | Apollo 9 (Maygay) vA.1 (Older) (Protocol) (M1A/B) (clone of: m1apollo) | 1997 | Maygay | m1apolloap | | 0.00 |
| | Apollo 9 (Maygay) vA.1 (Older, 15GBP) (M1A/B) (clone of: m1apollo) | 1997 | Maygay | m1apolloao | | 0.00 |
 | Apparel Night (Japan 860929) | 1986 | Central Denshi | apparel | Tabletop / Mahjong *Mature* | 8.43 |
| | Apple 10 (Ver 1.21) | 1998 | Sandii' | apple10 | | 0.00 |
 | Appoooh | 1984 | Sanritsu / Sega | appoooh | Wrestling | 5.83 |
 | Aqua Jack (Japan) (clone of: aquajack) | 1990 | Taito Corporation | aquajackj | | 0.00 |
| Aqua Jack (US) (clone of: aquajack) | 1990 | Taito America Corporation | aquajacku | | 0.00 |
| Aqua Jack (World) | 1990 | Taito Corporation Japan | aquajack | Shooter / Driving (chase view) | 0.00 |
| | Aqua Jet (Rev. AJ2 Ver.B) | 1996 | Namco | aquajet | | 7.00 |
 | Aqua Rush (Japan, AQ1/VER.A1) | 1999 | Namco | aquarush | Puzzle | 8.00 |
| | Aqualand | 1986 | Juegos Populares | aqualand | | 0.00 |
 | Aquarium (Japan) | 1996 | Excellent System | aquarium | Puzzle / Drop | 7.67 |
 | Arabian | 1983 | Sun Electronics | arabian | Platform / Run Jump | 6.60 |
| Arabian (Atari) (clone of: arabian) | 1983 | Sun Electronics (Atari license) | arabiana | Platform / Run Jump | 0.00 |
 | Arabian Fight (Japan) (clone of: arabfgt) | 1991 | Sega | arabfgtj | Fighter / Field | 0.00 |
| Arabian Fight (US) (clone of: arabfgt) | 1991 | Sega | arabfgtu | | 0.00 |
| Arabian Fight (World) | 1991 | Sega | arabfgt | Fighter / Field | 7.48 |
 | Arabian Magic (Ver 1.0A 1992/07/06) (clone of: arabianm) | 1992 | Taito America Corporation | arabianmu | | 0.00 |
| Arabian Magic (Ver 1.0J 1992/07/06) (clone of: arabianm) | 1992 | Taito Corporation | arabianmj | | 0.00 |
| Arabian Magic (Ver 1.0O 1992/07/06) | 1992 | Taito Corporation Japan | arabianm | Fighter / 2.5D | 7.29 |
