ah, that makes sense. now that i know how to play, i can finally enjoy the game. while i was playing, though. i experienced a bug. after i finished the drum routine sometimes (just sometimes) the reds would shoot at my troops as my left screen is stuck on the drumming screen with no blocks falling down to the drum. its like that for a few minutes and then goes back to normal. its also when i get a score 20 or higher.