I've seen this idea of switching gravity quite a lot this jam, but I must say I liked this one!
I said wow nice when the movement was also inversed about half way through the level :D
I did find a bug in the beginning, if you press down to get the extra "!" block, if you jump before it's in it's most downward position it gets stuck on your head and you move the block until you hit the next block and you get killed :D I was so happy to catch it... for a moment haha