In Crate Crash 2, you use explosions and slingshot-like force to clear all the crates off the screen. Walls and floors around the crates make this more difficult than it sounds. Each level gives you a different configuration of crates and barriers, making you come up with new strategies. Shoot a crate at just the right angle with the perfect amount of force to send it in the right direction and keep it from bouncing back. See how fast you can clear a level, and once you succeed, try to do it again in fewer moves, or move on to the next level.