| Ashes of the Old World | WORLD | |
| Prototype |
| Asmik-kun Land | JP | 1991-12-20 |
Asmik | Commercial |
| Aspect Star 'N' | WORLD | 2019-10 |
Nicole Express | Prototype |
| Assault!! On Planet Beezlbub | WORLD | 2022-02 |
T-bone#1 | Prototype |
| Assimilate | WORLD | 2012-03-17 |
Retrozone | Unlicensed |
| Asterix | EU | 1993 |
Infogrames | Commercial |
| Asteroids | US | 2004 |
Nice Code Software | Unlicensed |
| Astro Boy | WORLD | 1988-02 |
| Unlicensed |
| Astro Fang - Super Machine | JP | 1990-10-26 |
A Wave | Commercial |
| Astro Robo Sasa | JP | 1985-08-09 |
ASCII Corporation | Commercial |
| Astro Smash 'n' Blast! | WORLD | 2022-10 |
Double Z Homebrew | Unlicensed |
| Astroid | WORLD | |
| Prototype |
| Astrosmash | US | 2003 |
Nice Code Software | Unlicensed |
| Astyanax | EU | 1990-03 |
Jaleco | Commercial |
| Astyanax | US | 1990-03 |
Jaleco | Commercial |
| Astyanax | US | 1990-03 |
Jaleco | Prototype |
| Astyanax | WORLD | 1989-12-21 |
Jaleco | Commercial |
| Atari Flashback | US | 2004 |
Nice Code Software | Unlicensed |
| Athena | JP | 1987-06-05 |
SNK | Commercial |
| Athena | US | 1987-08 |
SNK | Commercial |
| Athletic World | EU | 1988-06-15 |
Bandai | Commercial |
| Athletic World | US | 1987-07 |
Bandai | Commercial |
| Atlantis no Nazo | JP | 1986-04-17 |
Sunsoft | Commercial |
| Atlantis no Nazo | JP | 1986-04-17 |
Sunsoft | Prototype |
| Atmo Sphere | WORLD | 2021-02 |
Fiskbit | Unlicensed |
| Attack Animal Gakuen | JP | 1987-12-26 |
Pony Canyon | Commercial |
| Attack of the Killer Tomatoes | EU | 1993-01-12 |
THQ | Commercial |
| Attack of the Killer Tomatoes | US | 1992-01 |
THQ | Commercial |
| Attack of the Petscii Robots | WORLD | |
| Unlicensed |
| Auge | WORLD | 2014-03 |
Metakrill | Unlicensed |
| Aussie Rules Footy | AU | 1991 |
Beam Software | Commercial |
| Auto-Upturn | AS | 1991 |
Sachen | Unlicensed |
| Awasete 123 | WORLD | |
| Unlicensed |
| Awol | WORLD | |
| Demo |
| Axolotl Adventure | WORLD | |
| Demo |