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More information about SEGA Corporation.
 Game Title | Year | Genre | Platform |
| Alien Syndrome | 1987 | Action | Amiga, Amstrad CPC, Atari ST, Commodore 64, DOS, Game Gear, MSX, NES, SEGA Master System, ZX Spectrum |
| Altered Beast | 1988 | Action | Amiga, Amstrad CPC, Atari ST, Commodore 64, DOS, Genesis, MSX, NES, SEGA Master System, TurboGrafx-16, TurboGrafx CD, Wii, ZX Spectrum |
| Amazing Island | 2004 | Action, Adventure, Simulation | GameCube |
| The Amazing Spider-Man vs. The Kingpin | 1991 | Action | SEGA Master System |
| Amiga Champions | 1989 | Action | Amiga |
| Amok | 1997 | Action | SEGA Saturn |
| Arnold Palmer Tournament Golf | 1989 | Sports | Amiga, Atari ST, Genesis |
| Arrow Flash | 1990 | Action | Genesis |
| Art of Fighting | 1994 | Action | Genesis |
| As Aventuras da TV Colosso | 1996 | Action | SEGA Master System |
| Assault City | 1990 | Action | SEGA Master System |
| Astal | 1995 | Action | SEGA Saturn |
| Astérix | 1991 | Action | SEGA Master System |
| Astérix and the Great Rescue | 1993 | Action | Genesis, SEGA Master System |
| Asterix and the Power of the Gods | 1995 | Action | Genesis |
| Astérix and the Secret Mission | 1993 | Action | Game Gear, SEGA Master System |
| Astro Boy | 2004 | Action | PlayStation 2 |
| Astro Boy: Omega Factor | 2003 | Action | Game Boy Advance |
| Astro Warrior | 1986 | Action | SEGA Master System |
| Astro Warrior / Pit Pot | 1986 | Action | SEGA Master System |
| Atomic Robo-Kid | 1990 | Action | Genesis |
| Ax Battler: A Legend of Golden Axe | 1991 | Action, Adventure, Role-Playing (RPG) | Game Gear |
| Ayrton Senna's Super Monaco GP II | 1992 | Action, Racing / Driving | Game Gear, Genesis, SEGA Master System |
| Aztec Adventure: The Golden Road to Paradise | 1987 | Action, Strategy | SEGA Master System |
| Bahamut Senki | 1991 | Strategy | Genesis | |
