I have been looking for some solid puzzle games for my PlayBook and Yair pointed out Scribble Worm. The relatively new game has you drawing worms with your fingers and navigating them with your finger. You draw a short straight worm to go fast in a line or draw an L shape to turn and avoid red walls. You also bounce off blue walls and slide on gray walls. There are 48 puzzles in total with two player head to head mode to change things up as you race for an apple.
Check out a video of the game below or pick up Scribble Worm for $0.99 in App World