Summary: GraviBalls is a fast-paced action/puzzle game. In this game, you attempt to group like-colored balls together in the same cells. You'll have to think fast as you tilt your iPhone to change the direction of gravity, as well as tap the screen to open and close walls, and activate powerups. Time is of the essence in this game, and higher scores are given for more efficient solutions (i.e. less taps in less time). The physics in this game are fun to play with, and its uniqueness stands out. Have fun!