Either the spikes need to be slightly smaller, or the hit boxes need to be. I die a lot not even close to touching them, the game seems impassible when you get to the coin between 2 spikes. Cant jump inbetween them or over them. Also the green power up doesn't seem to do much except make me bigger. I figured it would be similar to the mushrooms in Mario, and give me another chance, but it doesn't and I can't figure out it's purpose.