Touch Arcade: The goal of Rocket Riot [99¢] from Chillingo and CodeGlue is to fly around an arena on a jetpack destroying enemies with your bazooka. And you can also destroy ...well, pretty much everything. You see, the entire level is destructible, so even the walls can be blown apart. Everything can be shot to pieces. But once you've blast a little short-cut through a wall, the level is not permanently destroyed, because it slowly regenerates.