Thank you ! For that puzzle there are two mechanics at play that I failed to explain properly : when you eat a color orb, you release the one you had before from the other end, and if your tail is on the way, the door can't close. I think I should have explained that in the tutorial, because it looks like this puzzle is a roadblock for many players. Level design is definitely not my best best skill, but I'm learning ! I'll release a post jam update with some improvements as soon as possible !