I've had a lot of fun so far, but I'm stuck on the level with the big blue rectangle on the left and five red rectangles in a row on the right. I've tried going to the top of the blue section and swimming as fast as I can to the right, but I can't land in the next blue section.
EDIT: Ahhhh, now I've got it. I forgot you can jump in water.
Holy crap I was on that last level for an hour. I legit walked away from the computer and made a physical copy of the puzzle with paper, colored pencils, and craft foam (as colored tokens) that I could mess around with, and it did help me learn a rule I hadn't internalized. 10/10 would get frustrated enough to break out craft supplies again.
