Oh, okay, this took me a bit to figure out. Very neat! I like this idea a lot.
Feedback:
- Some explanation for the controls would be helpful. I didn't realize at first that clicking switched between worlds. (Though now that I've done that, I think I remember seeing you post progress on this in the Discord!)
- Maybe make it more clear where switching worlds could be helpful. And similarly, don't let the player fall into the void at the beginning of the level. That's where players want to try out the basic movement/mechanics, so generally the first part of a level will feel relatively safe.