This looks really spectacular! I am almost finished with the demo. Beautiful graphics and mildly difficult puzzles. Can't wait for the full game! Available on Steam.

Thanks for the heads up. I'd completely missed that demo, because for some reason it's not on the game's main page. The only way to get it is from its own demo page (or itch.io). 

I'll have to check it out. Seems it's a single-game remaster of an old episodic mobile game.