you have to pound on his head
you have to defeat the boss in world 5 castle with mini mario.
there are 2 ways to do that. First way: defeat thw world 2 boss as mini Mario. Then theres a cannon somewhere in world 4 (unlocked by defeating the world 2 boss as mini Mario). Use it to blast to world 7. Second way: defeat the world 5 boss as mini Mario. If you defeat those bosses with mini Mario only and never defeated it as normal sized Mario, you skip world 3 or world 6.
To unlock world 4 when you are about fight world 2's boss you must defeat the boss as mini Mario when you beat him world 4 is unlocked. Then to unlock world 7 when you are about to face world 5's boss again you must defeat it by using mini Mario then world 7 should be unlocked.
what you have to do is get the mini mushroom on world one 1-3 and defeat the world 2 boss as small mini Mario after that in the snow world defeat the boss as small and that will lead you to world 7 ta dahhh!
Defeat Petey Piranha (W5 Boss) as Mini Mario.
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
Ok so on Super Mario Bros for the Nintendo to get to world 4 you have to go to world 2 and defeat it as tiny Mario then to get to world 7 you have to go defeat world 5 as tiny Marion there that is how you do it
Defeat the boss of world 2 as mini Mario by doing ground bounces. You then can go to world three.
ok if you are talking about the new super Mario bros ds game, you have to defeat the world 2 second boss (petey plant) as mini Mario/luigi
it's simple. in world 2, keep the mini mushroom you find and defeat the end boss with it. if you don't know how to hurt bad guys as mini mario, just crouch jump.
If you beat the boss in super mini form, instead of running to the next world, you'll fall into a tiny crevice that will lead you to world four.