Connect-N (TicTacToe and more)

This app provides the games TicTacToe (OXO), Connect4 (4 in a row), or any combination of both games. Really tricky versions of the simple Tic Tac Toe... In any case you will play against an automatic player with configurable difficulty level. Additional difficulties and alleviations arise through extra modes like blocked fields, hidden fields, or joker fields. Detailed information can be found here:

http://www.christian-hacker-online.de/android_connect_n.html