Excellent, very polished game! The sounds/music were perfect, the jumps are SUPER satisfying with the jostling of the cart and all that, and the general gameplay loop is fun!
I do think...that I must have missed something, or perhaps experienced a bug. It doesn't seem like distance traveled (or backflips) have any impact on the amount of gold I earn? Which means the only gold I'm earning is from pickups, which means the gold costs in the shop feel...far too high. I dunno, maybe I'm just really really bad, but currently it feels like there's a pacing issue and it doesn't sound like anyone else is experiencing it.
I'm curious what your thoughts are, but in any case, still a fantastic game with a ton of polish and hard work put into it!!