Unbelievably great game, especially for 3 people in a 4 day game jam! Loved the idea and the level design was really great. The polish too was excellent.
My only real critisism would be the jump, im not a fan of it only activating when letting go, id rather have it be instantanous when you start pressing it. And its probably more taste, but I often got confused (especially in cases where I needed to react quickly not to fall of) where I wanted to go forwards and started reversing of the edge (totally my fault i know XD), I think maybe the control scheme should be a bit different.
I think I would like to have the pullback motor on 'S', the braking on 'Space' and maybe the jump on 'LMB' that way when you want to go forward you dont accidentally reverse. But thats just my taste, its totally fine how it is!
Great game 100%, would love it to be expanded!