Super Mario Bros 3 Walkthrough (NES) - World 1

I skipped the whistles because I assume everyone knows where they are and they would just clutter my inventory since I knew I wasn't using them. There's at least three spots on World 1 where you can accumulate unlimited lives. I didn't bother attempting to demonstrate how on 1-5 because it's on a slope but you can do it if you really try. You can also get at least 5 or 6 1-ups bouncing off of Bullet Bills on the World 1 ship if you time it right (which I don't).