In this mode, you (Mario) can explore the secrets of any world that you have been to. There are no enemies, so you can play with the native creatures of the planet, look for the elusive Silver Coins that only appear during this mode, or just explore! Up to 4 players can play at once. Player 1 is Mario, Player 2 is Luigi, Player 3 is Wario, and Player 4 is Waluigi In Black Hole Fight, a planet randomly chosen from planets you have visited in Story will appear (except with no life forms), and the people playing will fight to the death. The goal is to knock the other players off the planet and into a black hole. Up to 8 players can play. Player 1 is Mario, Player 2 is Luigi, Player 3 is Wario, Player 4 is Waluigi, Player 5 is Peach (with a jumpsuit instead of a dress), Player 6 is Daisy (with a jumpsuit instead of a dress), Player 7 is Rosalina (with a jumpsuit instead of a dress), and Player 8 is Yoshi. You can play this mode online