This game was honestly amazing. The levels were so well done. Only peeve for me was that space wasn't jump so kept dying when pressing space >.> but that's my issue not yours :D. Music was really nice and calm, a great choice for the game and overall was so well done. Great job.
Only maybe bug was if you jump next to a wall, it'll cause rotation of the cube which sends you into some hyper-speed, bug/feature :D?