I'm guessing ya forgot about trackpad players? xP xD
Honestly, it's a neat implementation, and the idea itself seems to work nicely! A bit too hard for a bunch of us it seems, but it is a gamejam so I can imagine how difficult it can be to balancing difficulty for a gamejam. I practically cheated by adding a checkpoint system to mine xD.
As a fellow rage game submitter, I approve! :]
Overall though, great work amigo! <3