TumbleDots is a fast-paced match-3 game that uses your iDevice's accelerometer (or arrow keys, in Flash). Tilt the board to line up groups of three or more gems of the same color...sounds simple, but there's a great puzzle challenge made trickier in the motion.
"This is probably the first game I have played where I have actually laughed out loud while playing."—What's That App?
"simple yet addicting game"—AppsOnTapp