Use a mini mushroom (the tiny blue ones).
super Mario 64
Beat the boss as a mini person
You can get them in red mushroom houses.
Well, if you're talking about New Super Mario Bros DS, Wii, U, and 2, You find the mini mushroom in certain levels.
this is if you mean new super Mario bros you get a mini mushroom and do the boss with the mini mushroom in world 2 and 5
You have to have (or be in) mini Mario form and kill the boss in world 5.
go to the 5th world and beat the boss as mini Mario
No, you can't. You can be Shell Mario, Mini Mario, Mega Mario, and Invincible along with the classic Super and Fire Mario.
if you mean ds,beat world 2's boss as super mini mario.
You cannon play multiplayer mini games in Super Mario 64 DS. Are you sure you don't mean New Super Mario Brothers? It has multiplayer mini games.
Defeat the boss at the end of W2 as Mini Mario. A Mini Mushroom can be found past the checkpoint flag.
defeat the boss from world 2 and 5 with mini Mario