Earlier this morning, Eli and I checked out Crumble Zone [$1.99]. It's a brand new arcade space shooter action game thing that tasks you with destroying asteroids as they circle around a lone green planet inhabited, luckily, by a little man with a mortar cannon. As you move about and fire, asteroids drop currency that you can use to obtain special one-use mortar shots. This currency also serves as a high score mechanism.
This is a hard one to explain, so check out our video if you're still kinda lost. As a whole, we're really digging Crumble Zone. It's a cellphone game through and through; easy to pick up, easy to play, and easy to put down.