Space Invaders
N.Blox - Tetris Clone
Asteroids
Snake
Simon
Tic Tac Toe
Hexxagon
Frogger
This asteroids is the best i've ever played, space invaders is good, Hexxagon frogger and Simon are good. Tic Tac Toe has limited replay value (
) and tetris is ok if you like that sort of thing Just go on the link below and there is a flash menu of sorts so you pick which game you want to play (asteroids :D ):
http://www.neave.com/games/