This week's Live Arcade release is a bare-bones port of the Atari classic Missile Command. It's got the standard laundry list of features: remade 3D graphics, a mode where you can play the original game, 200 achievement points, blah blah blah. Missile Command has been done to death, if you ask me. The game costs 400 MS Points ($5 US), but if you really want to play Missile Command for a few minutes I recommend you just do a simple Google search for a free clone.