Really neat concept! However, as neat a puzzle it is, the fact that you have to backtrack really bogs it down. In fact, most games run in circles trying to figure out how to minimize backtracking. I spent most of the play time just struggling to jump on a box while lagging, waiting for the door open/close cutscene to finish, and forgetting which door takes me back to the previous room. The game looks wonderful, and I could definitely see myself playing a full version of this, but there are a lot quality of life improvements that would have to be made.