I love this game a lot. It’s fighting it out with Shenzhen as my favorite Zachtronic’s game, which is saying something because I adored that game*.
This is probably my favorite solution I’ve made. I love the symmetry. My only regret is that I needed to break symmetry slightly by delaying the arm applying the final salt to the molecule on top because the salt collide if you pass them over the central glyph at the same time.
I also like this one quite a bit, although not nearly as much as the Invisible Ink solution.
*Shenzhen I/O is extremely good, although probably not as approachable Opus Magnum. It’s a game about being a engineer designing circuits to control various cheap electronics (“haunted” dolls, color changing vape pens, fake security cameras etc). The manual is a 30 page PDF made to look like a collection of reference materials, documentation on how to program the microcontrollers used in the game, datasheets for various components etc. It starts by stating that to get the best experience you should print out the manual and put it into a 3 ring binder with dividers and everything. This actually works phenomenally well, the way the manual builds verisimilitude while teaching you to play makes it easily the best manual in any game I’ve played and I had a lot of fun just reading datasheets for made up electronics.
This is obviously a game where being the sort of huge dork who enjoys reading documentation for imaginary equipment helps, but it’s also just an extremely good puzzle game. It also left me feeling surprisingly prepared when I wound up having to do some stuff with Arduinos for work since I already had some experience programming microcontrollers.