This is gomoku not go, but I don't see a gomoku tag, so..
Gomoku is one variation of go. Specifically, go for people who don't know the complicated rules of go. It's played on the same table (originally, gomoku was played with 19x19 board, same size as go board, but later reduced to 13x13), using the same stones, after all.
The sole creator of this, Manami Honda has been a key animator for shows like Bocchi the Rock!, Chainsawman, Jujutsu Kaisen, Onimai etc. and this is his graduation project