| | Albert Square (Maygay) v1.1 (M1A/B) (clone of: m1albsq) | 1993 | Maygay | m1albsq1 | | 0.00 |
| | Albert Square (Maygay) v1.1 (Protocol) (M1A/B) (clone of: m1albsq) | 1993 | Maygay | m1albsq1p | | 0.00 |
| | Albert Square (Maygay) v2.2 (M1A/B) (clone of: m1albsq) | 1993 | Maygay | m1albsq2 | | 0.00 |
| | Albert Square (Maygay) v3.0 (M1A/B) (clone of: m1albsq) | 1993 | Maygay | m1albsq3 | | 0.00 |
| | Albert Square (Maygay) v4.1 (M1A/B) | 1993 | Maygay | m1albsq | | 0.00 |
| | Albert Square (Maygay) v4.1 (Protocol) (M1A/B) (clone of: m1albsq) | 1993 | Maygay | m1albsqp | | 0.00 |
| | Alcon (US) | 1986 | Toaplan / Taito America Corp. | alcon | Shooter / Flying Vertical | 7.58 |
| | Aleck64 PIF BIOS | 1998 | Nintendo / Seta | aleck64 | | 6.00 |
 | Alex Kidd: The Lost Stars (set 1, FD1089A 317-0021) (clone of: alexkidd) | 1986 | Sega | alexkidd1 | | 0.00 |
| Alex Kidd: The Lost Stars (set 2, unprotected) | 1986 | Sega | alexkidd | Platform / Run Jump Scrolling | 6.05 |
| | Algar (L-1) | 1980 | Williams | algar_l1 | | 2.00 |
| | Ali | 1980 | Stern | ali | | 0.00 |
 | Ali Baba and 40 Thieves | 1982 | Sega | alibaba | Maze | 6.38 |
| | Alien Arena | 1985 | Duncan Brown | alienar | | 0.00 |
| | Alien Arena (Stargate upgrade) (clone of: alienar) | 1985 | Duncan Brown | alienaru | | 0.00 |
| | Alien Challenge (China) (clone of: aliencha) | 1994 | IGS | alienchac | | 0.00 |
| | Alien Challenge (World) | 1994 | IGS | aliencha | | 6.50 |
 | Alien Command | 1994 | Jaleco | acommand | Unplayable | 9.00 |
| | Alien Crush | 1989 | Hudson Soft | aliencr | | 0.00 |
| | Alien Front (Rev A) (clone of: alienfnt) | 2001 | Sega | alienfnta | | 0.00 |
