I find the game to be too unforgiving, I couldn't get past the first few platforms. Other than that, you still were able to get a game out in a short amount of time, good job !

EDIT : After seeing a video of someone else playing it, I realized that my game ran much, much faster than in the video. I think there's something wrong with how you handle the time between frames, and the more frames per second we have, the faster the game gets. I used the WebGL version to play.