The controls don't work well on Firefox. Pressing up doesn't always work, or gets canceled by pressing right or left.

Otherwise, good casual fun.

Edit: It happens whether I use arrow keys or WASD. And its not just when pressing up, now it seems like the left key is more affected. It's a bit random.

This needs online high-scores! Interesting platforming mechanic. I think I would have preferred if the character's normal left/right speed was a little quicker.

Fun game, I like the controls. There is a glitch in the highscores; Level 19 is missing, and Level 20 actually has Level 19's scores, and so on.