 | 005 | 1981 | Sega | 005 | Maze / Shooter Small | 5.85 |
| | 18 Wheeler (JPN) | 2000 | Sega | 18wheelr | | 8.62 |
| | A.B. Cop (FD1094 317-0169b) | 1990 | Sega | abcop | Driving / Race (chase view) Bike | 10.00 |
 | Ace Attacker (FD1094 317-0059) | 1988 | Sega | aceattac | Unplayable | 10.00 |
| Ace Attacker (Japan, System 16A, FD1094 317-0060) (clone of: aceattac) | 1988 | Sega | aceattaca | | 0.00 |
 | Action Fighter (FD1089A 317-0018) | 1986 | Sega | afighter | Shooter / Misc. Vertical | 7.00 |
 | After Burner (Japan) (clone of: aburner2) | 1987 | Sega | aburner | Shooter / Flying (chase view) | 0.00 |
 | After Burner (Mega-Tech, SMS based) | 1987 | Sega | mt_aftrb | Shooter / Flying (chase view) | 0.00 |
| After Burner II | 1987 | Sega | aburner2 | Shooter / Flying (chase view) | 8.75 |
 | Air Rescue | 1992 | Sega | arescue | Unplayable | 9.00 |
| | Air Trix | 2000 | Sega | airtrix | | 0.00 |
| | Airline Pilots (Rev A) (clone of: alpiltdx) | 1999 | Sega | alpilota | | 0.00 |
| | Airline Pilots Deluxe (Rev B) | 1999 | Sega | alpiltdx | | 0.00 |
 | 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 | 3.60 |
 | Ali Baba and 40 Thieves | 1982 | Sega | alibaba | Maze | 8.17 |
 | Alien Storm (Japan, 2 Players, FD1094 317-0146) (clone of: astorm) | 1990 | Sega | astormj | Platform / Shooter Scrolling | 0.00 |
| | Alien Storm (Mega-Tech) | 1990 | Sega | mt_astrm | Platform / Shooter Scrolling | 6.00 |
| Alien Storm (US, 3 Players, FD1094 317-0147) (clone of: astorm) | 1990 | Sega | astormu | Platform / Shooter Scrolling | 0.00 |
| Alien Storm (World, 2 Players, FD1094 317-0154) | 1990 | Sega | astorm | Platform / Shooter Scrolling | 7.21 |
