This was fun and well implemented. I don't play platformers a lot, but it seemed to have some nice touches often left off jam entries, like allowing the player to jump just a hair off the edge of a platform. The in-air control was so sensitive that it almost seemed like too much, and combined with the backwards movement, it made the game quite difficult for me! The level design was good and new concepts were introduced gradually and gracefully. Of all the entries, I think this one took the theme the furthest (and the most literally, haha).