-Use up and down arrow keys (or w and s) to aim your cannon -Press Space to fire a cannon ball -Don't let your attackers touch the edge of the castle (grey strip) -Watch your cannon ball count!!! (+3 after each wave) -The attacker that shows up last (or the red guy) is the commander, if you take him out, all the rest die -There are ten waves (all are possible to beat... Well if you're a boss like me)