Recently, I made Battle CP: https://battle-cp.vercel.app/ It's pretty much battleship meets competitive programming for more details just read the rules on the website. My friends, people in my college and I. Had a great time playing, and its a really fun way to practice, with your friends. I've done my best to make the game fun, problem solving focused and super customizable. I'd love some feedback from the community and hope you guys have a great time playing it