This is a 3D platformer engine! There are 3 levels as of now. The Quality slider changes what tier ground detection is at. I recommend above 2 for the best and least glitchy experience.
I got the idea from wizzwizz7's project 3D Platform Creator https://scratch.mit.edu/projects/90282865/ , but I wanted to make my own. Wow! This is now my most viewed project! Thank you everyone :D