Play your favorite Tic Tac Toe game right on your messages and for free! Challenge your friends, take advantage of new iOS 10 stickers and animations features, and have fun. How to launch an iMessage app Go into an iMessage conversation, click the A icon (or the arrow icon if it is not displayed). If you play for the first time, click the bottom left corner button to display your messages extensions and click the Tic-Tac-Toe to start a new game. For any question or suggestion, please send us an email at [email protected].