Curveball is basically a 3D game of pong. Use your mouse to control the paddle, and return the ball to the computer. If you can master curving the ball, there's no stopping you.

Nanaca Crash is a game from Japan. It's really weird but highly addictive. Hit somebody with your bike, then see how far they fly.

This isn't so much a game as a weird simulation. It's mesmerising.