Tic Tac Toe ∙

Put away your pencil and paper - now you can play Tic Tac Toe on your iPhone or iPod Touch for free.
Tic Tac Toe Free supports one player and two player gameplay, so you can play against another human or against your iPhone.
The AI for one player mode includes three difficulty levels, so you can play against a computer player that matches your skill level. A move randomization engine ensures that your iPhone won't keep making the same moves over and over again.
Our new turn-based network play feature allows you to play up to 16 simultaneous network games against your Game Center friends or random network opponents over Wi-Fi or 3G.
Tic Tac Toe Free offers a host of exciting features, including:
* Turn-based network play over Wi-Fi or 3G
* Great graphics and exciting sound effects
* Configurable player names and score tracking
* Undo function
* Automatic save when you get a phone call or exit the application
Tic Tac Toe Free is supported by unobtrusive banner advertising. Tic Tac Toe Pro is the same great app as Tic Tac Toe Free without the ads.