Made a Rubik's cube kind of game for phones (http://eclidus.com) with my buddy and sales were at that level for a while. Then they died down, I couldn't be bothered to market it so I made it available for free. :)
I'll probably try something similar again. ¯\_(ツ)_/¯
I assumed since it's the same-ish principle. I find it fun how people will strive to work so hard to "ruin" a game, but it is definitely impressive to see how they go about to learn the solve. That should be a Show HN in and of itself.
Oh definitely, the whole arduous process of finding a solution and then getting the best time possible is fascinating. We actually wrote a bit about it here in terms of the Rubik's cube itself:
https://www.eclidus.com/our-story.html
I'll probably try something similar again. ¯\_(ツ)_/¯