You played the game... Now it's time to unplay it!
When you pick this game up, it has already been beaten. The big bad boss is defeated, the coins are collected and the princess has been rescued. Why, oh why?
Unraveling this mystery takes you through the entire game, from the last level to the first. You must uncollect the coins, revive the enemies and avoid nasty time paradoxes. In other words, you must uncomplete the game by playing it backwards.