This app is a recursive version of the popular Tic-Tac-Toe (also known as Xs and Os) game I wrote in ~3 days, based on the Ultimate Tic-Tac-Toe game.
Or download the latest APK from the Releases Section.
The code is based on Kirkezz/TicTacToeNxNSFML and contains many parts with code of questionable quality. I'll probably rewrite it when I have time. The game supports customization of the width and height of the playing field, the victory condition, and the number of players.