Congkak
Some weeks back my son played congkak, a traditional game, in school. He then begged me to buy one, so I did. I never got to play it my whole life, though I've seen it many times.
Played it a few times with my boy and then we were thinking how to come up with the ideal opening. I naturally turned to Claude, and then after a few iterations, out came this new app! 😄