A classic tic tac toe game that you can play against friends over 3G or WiFi using Game Center.Features:• Play multiple matches at once.• Close the game. It's okay. You can use other apps while staying in the match.• You're notified when it's your turn, even if you're using another app.• Leaderboards and Achievements.• It's totally free [there are ads];Requirements:• It's for iOS 5 or higher.• You need Game Center to play.Note: There is no single player or local multiplayer modes. There are plenty of those tic tac toe games on the App store. If people really want us to enable them, email us and we will consider it. Otherwise, X Versus O will stay network only.