That is quite a cute game with a pretty decent size and a story ! I think the collisions on the floor spikes could be a bit fairer, there are a few times where I was sure the floor was clear and I still died. But, fun nonetheless. Maybe there could be a coin counter, since one of the goals of the game is to get rich. I agree that a jump button would be preferred over "up", I grew up with joysticks with only one fire button, so jump on "up" was pretty common, but I think jump button works better.