An open source Tic-Tac-Toe game. Play against your phone, or turn off single player to play against a friend. It can easily be installed from Google Play.
This is a simple tic tac toe app. The game is mostly html, CSS, and javascript.
This application is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.