Here's how you beat the re-incarnated Bowser being controlled by King Boo. When he rolls the spiky ball at you, you have to suck it up with the vacuum (you have to touch the ball with the vacuum while sucking). When you have the ball, shoot it at Bowser. His head should fly off, with King Boo flying out of the body. Keep trying to suck King Boo up with the vacuum. He will eventually go back into Bowser. Repeat the steps until you win.
Good Luck!
If it is Super Mario Bros. then yes you do, you defeat 2 Browsers at a time one normal one and one large one that breaths fire I advise to get the big mushroom before you begin and don't lose it when you finally get to the end and beat the monsters Princess Peach will come down and give a kiss to Mario/Luigi and then it will show you all the credits but don't turn your Nintendo off because of the credits because if you do it wont save everything you did so you basically didn't beat the game.
To complete this game you must capture all the Portrait Ghosts as well as all the Boo's. Capturing King Boo will be the last objective and if completed the game ends.
fess
I have, the very last character you get is TOADETTE and the last level to beat is Bowsers Castle on the lightning cup.
Beat bowser, and huge bowser on the last level.
You do your best and go on super cheats.com for hints
beat the last level in world three
To get level S8-Crown you must: beat every level with Mario and Luigi, collect all the Star Coins, & get a gold flag on each level. S8-Crown will then appear in Special 8.
you have to beat the last level of world two, while being little and the same thing to get w 7 except you have to beat the last level of w 5 while being little.
throw foes and veggies and beat bosses at the end of every level. on the last level of World 7 u have to beat Wart, and save Subcon. and u can choose Mario, Princess Peach, Toad and Luigi. :)
beat the last boss in the last castle in world 2 as mini Mario
The last level is 999 The last level is 999
You beat every level until you beat the last level.
of what...?