Pros: The controls are fluid and responsive, and the graphics seem to be really good for a calc. The frame rate never slows down, even at the highest speed (which, by the way, I would not recommend if you're a beginner). The backgrounds are a nice touch.

Cons: Sometimes, you spawn right at the edge of a platform, with not enough room to gain enough velocity (you can accelerate in the air, too, but sometimes there just isn't enough room) to reach the next platform. These occurrences are infrequent, but they do happen, especially on the higher levels.

Possible additions: Moving backgrounds would be nice (slowly scrolling as you progress through the track); they seem to be static as of now. A small meter at the edge of the screen showing your progress through the level would be neat too.