The game is basically your classic shoot-em-up, but in reverse.
“At the beginning of the game you stop a massive alien invasion, but all the destruction damages the space/time continuum, causing the flow of time itself to reverse. What would have been the final boss is actually the beginning of your backwards journey. You must help Rick Rocket restore the continuity of space/time, before the temporal anomaly rips the universe a new time-hole.
“Since time is reversed, you must undo your actions to protect the health of the space/time continuum by unfiring your shots, which are timed to the beat of the game’s music. In addition, you must dodge enemy projectiles returning to the guns that fired them. You can unfight the battle with either a DualShock 3 wireless controller or a PlayStation 3 guitar controller.”
The soundtrack will also be made available through PSN via a discounted bundle. Pricing will be made available soon.