It was interesting to read about optimizing a 3D puzzle for mobile devices. With projects like this, I think it’s important not only to come up with the puzzle mechanics but also to make sure everything runs smoothly on different devices. I also enjoy different kinds of puzzles and sometimes create crosswords with SuperColoring https://www.supercoloring.com/tool/crossword-maker. It’s a completely different format, of course, but I like the same idea of creating something that makes people stop and think for a while 😄