Hey there! I just finished a youtube video explaining our donut chess in detail: https://youtu.be/iRcfHCPFgkM
So I thought it'd be cool to show it off here too- it can be played around with at mchess.io/donut - you can also set up an AI or online game on the site.
This is all indie dev work from a couple friends and myself.
My favorite torus game is Tetris on a Torus
Took me a while to realize it was a 3D torus and I had to drag around to see the whole board lol
Maybe when the page loads the torus should rotate around a bit
Shameless plug. If you're into chess-themed puzzles, you might like: https://chedoku.com/blog/chessPuzzles
It's fun to sit down and draw what the board looks like when you cut and flatten the torus before you watch the video!
Bonus points if you hit upon the other 2D projection that is useful (I didn't)
looks like the white king/queen aren't on the right colors (queen goes on her color) - confused me a bit when trying to map the space to a 2d board