Atari 2600:A
Games
A Mysterious Thief
Acid Drop
Advanced Dungeons & Dragons: Treasure of Tarmin
Adventure
Adventures of Tron
Aerial Ace
Air Raid
Air Raiders
Air-Sea Battle
Airlock
Alien
Alpha Beam With Ernie
Amidar
Androman
Aquaventure
Armor Ambush
Artillery Duel
Assault
Asteroid Fire
Asteroids
Astroblast
Astrochase
Astrowar
Atari 2600
Atari Video Cube
Atlantis
Atom Smasher