Great Game But...
Single Block Platforms gotta go.
Sorry, but you have to land exactly on them to prevent yourself from falling. That's not the hard part, the hard part is that mario slides when he lands. AAARRRGGHH!!!!!!!!!! Anyways good game. Doesn't really have that "Mario feel" though. More enemies and less small platforms over holes. Levels should also be fuller if you know what i mean.
Just some suggestions, but you don't need to follow em. Couldn't get past level 4. Peace out. ;)