I saw quite a lot of platformers with alternating controls in the jam, but this one really hit the spot and take the concept all the way it needed to go.
I kinda freeked out the first time I went under and then fell (was not expecting it) but really good surprise. it's a nice add to the game mechanic.
(33 yellows, 7 greens, 4 reds, 12:48)
A bit frustrated I didn't get all the crystals I might give it another go later.
Great job !