This was a nice little puzzle game. I played up to chamber 22. The puzzles were fun, and difficulty progressed at a good rate. There were a few that took me a bit to figure out, but most were pretty straightforward. I read through the devlogs before playing, so it helped knowing a bit about the slimes. I liked the tips in game when something new was introduced.
Pressing R to restart is not on the "tutorial" screen.