Sigh... Same Problems as Canabalt
You used that same framework didn't you...
Anyways it has the same problem: Every 1 in 10 or so times you press the jump button it refuses to register, sending you to your death. Whether this is a programming error on the side of the jump routine, the platform recognition, or a limitation of the program/browser I don't know. But either way it kills the game when you can't complete the overall objective with confidence.
If I can't push the spacebar with 100% confidence that a jump will occur once I do THE GAME IS OVER. The rest is moot entirely and completely. The game is dead on arrival, and only rage can follow any attempt to play it correctly. Lol... I'm angry with it already.