"1234!Collision!!" is a very simple game,which combines simple game play and excellent touch screen controls. It will bring your family hours of fun.GameCenter is supported now, you can get top weekly high scores against all your friends.HOW TO PLAY:Tap on the screen to aim the target then lift your finger to pop a bubble, when the bubble with same color hit each other, the bubble's number will minus 1.number on each bubble indicates how many more collisions needed to cear it.there are white bubbles in some levels which you do not need to clear, but if you do that, you can get extra scores.