Infitic-tac-toe

This is tic-tac-toe, but with new possibilities. It's still a 3x3 grid, but repeated on every side.

You win by getting three in a row—horizontally, vertically, or diagonally—across the full 9x9 board.

But unlike tic-tac-toe, there's always a winner.

PS: It's a 2 players game, been too lazy to build a solo mode.