Rubik's Cube
Try a virtual version of the 4-billion-combo puzzle.
Space Invaders
Shoot 'em all before they land. And don't let that soundtrack get stuck in your head.
Pac Man
Grab what you can, avoid getting caught, claim the power and attack your enemies...
sounds like a perfect business metaphor.
Missile Strike
Based on the old Missile Command game, shoot the falling objects and avoid Armegeddon.
Break-It
Follow Reagan's advice and "tear down this wall," one brick at a time.
Asteroids
Pilot your ship through space, shoot everything, especially the things that shoot back.
Tetris
Thoughtful addictive geometric puzzle-game, or Soviet psychological weapon? You decide.
Donkey Kong
Boy meets girl, boy loses girl to giant monkey, boy rescues girl from construction site.
Sonic The Hedgehog
Just like the classic home video game...without your mom nagging you to clean your room.