Not bad, but....
1) It seems like the timing is too picky. You have to start the jump/roll/jumproll at EXACTLY the right time.
2) It's a little 1-dimentional. There's only one game with no new obstacles or powerups at any point. It gets kinda old fast.
3) It looks like Spin Sprint Orange more than a little.
Good concept, but it needs fine-tuning.