How about a game of 8-ball pool?
Play a round of 8-ball pool with realistic physics simulation. Large screen area. Touch to aim and shoot the white ball. The strength of the shot is proportional to how far you are touching behind the white ball.
Aim of the game is to pocket all the balls with minimum number of shots. The solid black (eighth) ball should be the last one to be pocketed. You lose the game if you pocket it while there are other balls on the table.