 If the player chooses to continue they're taken to a secret stage, Round 0, which has to be completed using a gameplay trick the player has not seen before in any of the other 100 stages of the game.The player can continue over and over and keep trying to beat Round 0.If the player powers off the console before they complete Round 0 and have activated the Resume feature they will be able to try it again the next time they load the game.