To beat the game, all that is required for you is to go to Fawful's Castle. (Peach's Castle taken over). You must beat Dark Fawful and then Dark Bowser and Fawful's Spirit. I suggest you be around levels 35-45.
Mario and Luigi goes to Bowser's Castle
super mario
in the flashing area
after inhaling it as bowser, first you destroy the glasses (as Mario and luigi), then the legs.
Bowser can't jump.
Mario & Luigi: Bowser's Inside Story
noone
First you have to get to toad town
Yes, one: Mario and Luigi in Bowser's Inside Story.
You don't
bowser has 92%
There are only 2 files in Mario and Luigi Bowser's Inside Story.