CounterStrike Training - One of the best online games ever now has a flash version!
Shoot Rat! - Use you're revolver and shoot as many rats as possible
Monkey Lander - Very addictive puzzle game. Get to the end of each level without hitting anything.
Moon Patrol - Blast those boulders, Jump thos craters.
DareDevil - Got what it takes to become a daredevil? Try to survive this extreme motocross stunt jumping game.