It would be cool to add a this category in levels like level 6, 22, 24, 25, 27, 28, aka levels with big skips. What do you guys think?

I think it would be cool to add Boxel 3D. As a different game, of course.

I've seen that in speedruns. When you're in the water areas, Big or fire Mario's hitbox is small. How do I do that? It would be helpful in some speeduns. Thanks!