Innovative idea for the money costing movement but I gave up very quickly: The exits weren't marked anywhere and I got stuck on the level with the yellow pillars. Replay button doesn't work. Had to play the web version because my 5:4 screen didn't allow me to travel until the exit at the tutorial level. Additionally, even though the mechanic is innovative, in the levels I played you don't exploit it at all. It costs a bunch of money to get to the bags so Im not sure there's much point getting to them. In general, finishing a level can be done without thinking about your money which defeats the whole point. Renders it all to just a fun coin animation when you change direction. I dont see the art really fitting together: you should have opted for that black and white style for everything thing: not just Mr.Crabs. Finally, Id say some music could do.
It's a really cool idea but lacks the right execution. Maybe try and expand on this after the jam? Make it playable and full and maybe ill play it again if you message me!