This code will let you play as Magneto or Juggernaut and to let you have unlimited credits.To do this, first, enter the options menu, secondly , enter the configurations menu. Before you choose any of the options inside, type the word "spam" and then enter the system option, change the credits until you see "Free Play"and at the bottom you will see and option called: "BOSS SELECT" which is actually not there. Change it to on then save and exit. Play the game as the second player, choose any character and at the "MANUAL or AUTOMATIC" menu press three the punch and hold it there until it finish loading for Juggernaut, do the same for Magneto using the three kicks.