Right and left arrow keys to move. Dodge the cannonballs as you descend toward the planet in your rocket. The higher your score, the faster the cannonballs fire. Try to set the world record!
This is a significant change to a great game from aaroncavanagh, that gave me a lot of ideas about sprite movement. Note: I only use the "username" block to make sure I don't set the high score on my own game. I don't think your username is recorded anywhere, unless it's in some of Aaron's code that I didn't see. Parts I added/changed: the gameplay in general; random starting points for the "enemy" sprites; increasing difficulty over time; movement of the rocketship. It would be pretty easy to add vertical motion and turn this into a shooter, for example.
