It is very difficult and I have yet to do it but what you need to do is get rid of dark bowser's 1000 hp. After that lord fawful (the bug) will restore his hp and he will get huge and throw a ball of minions at you. Dodge this attack and punch him in the stomach. Lord fawful will then pop out him. You must now use your vaccume to suck up lord fawful. This is very difficult and probobly will take some time. Note that when you are sucking up lord fawful dark bowser will be trying to suck him up as well. After that it's smooth sailing. Just kill dark bowser one more time and you'll win. Hope I helped :D
bowser has 92%
noone
You go through the pipes in bowsers body
There are only 2 files in Mario and Luigi Bowser's Inside Story.
bowser can breath fire!
You can go into Bowser's Castle when trying to get out of the path.
There's Save Blocks everywhere! Inside Bowser and outside Bowser.
u hav to go into bowsers memory banks and u beat fake Mario and luigi then get the code
Where are you, are you in the castle, have you found bowser?
You have to defeat a bug that's blocking Bowser's flame pipe.
He cannot jump. He can learn the Body Slam move but he can't jump. The raise platforms that Bowser can't reach is where Mario and Luigi explore
You turn on your DS and tap "Mario and Luigi Bowser's Inside Story". Tap the file you want to play and play the game. Hope I helped!