Press the arrow keys to move Mario around. You have to go in the door on the left. The door with a star on it is the boss battle with Bowser, but you can't battle him until you go into the first door. To get into the door on the right, you have to have three stars first.
I put, or changed, that there was a wall in front of the doors so that you can't get in, or see the door, and I put ANOTHER door up on the boss fight door so you can't see it. Tell me when you passed the level and I will take the wall off. I also changed the looks data stuff on it. And by that I mean that I added the purple data thingies. I give credit to SuperMarioGlitchyVI for putting a ton of stuff in this project. Thank you for all the views!