hmmmm beta eh?
well at first i was like: wtf is this crap? but then i read its just a beta so here's a list of glitches and things to be improved:
glitches:every time i changed room all my coins dissapeared an when i got back in the last room the coins were back again.
sometimes i just flew trough a wall.
not just like a grey ball but make it someting more unique yano
and when u die that you don't have to start from the beginning but just like the same room or one room back(but without your coins)
add like lives to it too and power ups(jump higher, roll faster etc) and maybe some enemies.
hope this helps =D you can definatly turn this in something good