Nice little platformer. I think it needs a few more enemies for variety and also I don't like how it puts you right back to the start if you take a hit. Nice take on the theme but I didn't understand why I'm giving up coins for jump height? You could add in the option to spend the coins on perhaps jump height or speed or perhaps buy a tool/key to open a door hence spending money gives you more. Either that or changes coins for items that weigh you down making your lighter when you lose them. Hope the feedback was useful.