It's pong, I swear. If you don't know how to play pong then you really need to learn. Pretty simple, control your "paddle" using up/down arrows and then hit the ball away.
This was a hundred block challenge: 100 blocks 13 for player, 13 for computer, 56 for ball, 18 for credits BTW: I promise it's possible, I've beaten it twice. I'm sorry the credits are so short