Collect all 44 challenge awards to unlock the following games:

Adventure
Air-Sea Battle
Asteroids
Battlezone
Blackjack
Bowling
Breakout
Canyon Bomber
Casino
Centipede
Circus Atari
Combat
Crystal Castles
Demons To Diamonds
Desert Falcon
Dodge 'Em
Double Dunk
Flag Capture
Football
Fun With Numbers
Golf
Gravitar
Haunted House
Home Run
Human Cannonball
Math Gran Prix
Maze Craze
Millipede
Miniature Golf
Missile Command
Night Driver
Off The Wall
Outlaw
Quadrun
Radar Lock
Realsports Baseball
Realsports Football
Realsports Tennis
Sky Diver
Slot Machine
Slot Racers
Space War
Sprintmaster
Star Ship
Steeplechase
Stellar Track
Street Racer
Submarine Commander
Super Baseball
Surround
Swordquest: Earthworld
Swordquest: Fireworld
Swordquest: Waterworld
Tempest
Video Olympics
Video Pinball
Warlords
Yar's Revenge