I was confused as to why the controls were reversed and why I couldn't hop onto the platforms at the beginning of the level, until I found out that I wasn't supposed to go that way. Then my mind was blow as everything became topsy-turvy as I played more. @_@ It's a pretty interesting way to implement the "unstable" theme in the game.
It's a nice entry to the jam. It was definitely easier than the game you've made for the previous Big Game Jam.