Really cool to see how this game can build in complexity with just a few mechanics! I did encounter the same audio bug as others in the comments (I'm assuming that's just a web build issue) and the movement could use some tuning, but the gameplay felt solid and fair. Really fun and clever overall!
PS: If you plan to refine this game after the jam, I think it might be nice to have separate buttons for "Restart" and "Edit Mode" as well. I found myself hitting Enter to restart the level when I fell off a ledge, but it would reset my edits as well. Probably just Mario Maker muscle memory. Lol