This is really nice looking. Unfortunately, there were a lot of technical issues. The collision boxes don't match the artwork, so I found myself hitting a lot of invisible hit boxes. On some platforms you can get stuck in the falling state even though you're standing on the platform, which won't let you jump to the other platform. This seemed to happen most on the highest outer platforms which seemed to be required to get to the upper middle platforms. I also think that having the platforms just high enough that you can jump almost high enough to get onto them, but still not, is more frustrating than interesting.
I do think that the concept is good though, and it looks really nice. If a few key bugs were ironed out, this could be a lot of fun as a little party game.