I'm not very good at this game and the full restarts felt a little punishing but I managed to free the first level's crab before dying by jumping into the void. I may give this another go later, I'm intrigued by the what the other commenters found in further levels.
Love the music, relaxing and whimsical. The diagonal tile wipe transitions are really unique, I haven't seen other entries use something like that.
Had an issue where the jump input binds suddenly stopped working. It seems to be a quirk related how Linux Mint treats the Alt key. I use arrow keys and ZX but alt-tabbed out to check on something. Not really a big deal, just something I haven't experienced before.