Sling Shooter is a game that contains 4 different modes:
Practice in Peace, where you can try out the game as long as you want to get better.
Gravity Attack, where you try to stay in the game as long as you can while it gets harder and harder.
1 Minute Challenge, where you try to get the highest score in 1 minute.
50 Shapes Challenge, where you try to get a score of 50 as fast as you can.