Good concept, overated
Let's start with the good things:
YES! Finally a playable game with Mario using his fist as a weapon! different levels different combo's and a slight challenge to play trough.
However, I think you need to work a few things for me to full rate it maximum.
First the psysics, I know it's hard but I like the way Mario jumps in the real game, this Mario jumps way higher which was annoying to jump trought the first level.
I love the way you used the camera, but it made me sometimes unable to see where I was jumping. try and work that.
Yes, there are combo's but there is nothing there to motivate me to use them. It's just a button bash. You could you know make something that would count the combo or the air juggle. Little something makes the game alot more exiting.
walljump was too easy, just hold up.. and when I fell in the lava nothing happened I just started from the beginning while all the enemies where still walking around. ex. Bowser knocked me off the arena with fire (and loads of it I liked that) and when I re-spawned the fire was still there.
last, at the end there could be a little ending something, the classic saved the princess or just a thanks for playing. Makes the edges around the game alot smoother and gives me the idea I'm not playing a beta testing game.
gratz on your earned frontpage I hope I did not disencouraged you to do these flashgames because eventually I think you will rock NG!!
4/5
good luck!