If आप want to know how to be Luigi I will tell you. First आप finish the game than आप go to to the प्रोफ़ाइल menu and आप hold एल and R as आप open आप प्रोफ़ाइल and आप will see Luigi. If आप save when आप play as Luigi it won't work so आप have keep on holding एल and R everytime आप want to be Luigi and to be Mario just do not hold एल and R just do what आप always do just go on. I hope this works for आप because it works for me. THIS IS ONLY FOR NEW SUPER MARIO BROS AND NEW SUPER MARIO BROS 2 NOT ANY OTHER GAME.