Five stars for originality! This game has such a unique concept. If I could change something about the game, probably I would go with how the mechanics are communicated to the player. I understand that the game chooses not to give you the training wheels, and I like that approach very much. But when avoiding tutorials, it becomes extra crucial to make use of common conventions to communicate some info.
Spoilers here for anyone who hasn't played the game:
For example the fact that you need to move to the left in the beginning was a brilliant joke on the player, but I can totally see someone not getting the joke and missing out on the game before it even actually begins.