Hats off for the smart and creative use of PuzzleScript to implement a 3D puzzle game. The slime mechanic has a lot of potential and the many hard levels exploit it to the fullest. Making all this during a game jam is very impressive. I've played for a couple of hours and haven't finished yet.
Though there was an effort to use different shades of grey for each layer, I still found some of the levels hard to read. Also, C2 can be cheesed without using the crate (using the goo as a bridge between the block above the lift and the exit).