Mouse Shooter GoGo is a puzzle game where the player controls a mouse that can move around anywhere on the stationary screen and must throw colored balls at other balls of the same color to make them disappear.
If you get hit by a ball you'll have to restart the stage, however you can use the ball you are holding to guard against other balls. There are two buttons, one throws the ball, the other locks/unlocks the direction. The game also features a two player versus mode.