@chrboesch Your game inspired me to create a raylib version of it: GitHub - SimonLSchlee/zig15game: A 15 puzzle game implemented with raylib.
It has simple sound effects, multiple different key maps (wasd, arrow keys, hjkl), resizes based on window size and has a help / credits screen.
Let me know whether the way I am crediting you is ok / if I should change something about it, link to somewhere etc.
I had fun working on it and I played a few more rounds than I should have. 
I thought about adding animations, but then I thought maybe I should get back to my other projects…
So maybe another time.
