Popular games for collection Tic-Tac-Toe

The game is similar to the traditional game of tic-tac-toe, but is played on four 4×4 grids stacked vertically; it is basically a computerized version of the board game Qubic using traditional tic-tac-toe notation and layout. To win, a player must place four of their symbols on four squares that line up vertically, horizontally, or diagonally, on a single grid, or spaced evenly over all four grids. This creates a total of 76 possible ways to win, in comparison to eight possible ways to win on a standard 3×3 board. The game has nine variations: it can be played by two players against each other, or one player can play against a built-in AI on one of eight different difficulty settings. The game uses the standard joystick controller.

It's Tic Tac Toe... with zombies, knights, orcs, and scientists!

Schach (German for "chess") was released for the Saba Videoplay, a Channel F-compatible system that Fairchild licensed for the European market. In this early chess simulation you can only play against the machine, as there is no multiplayer support. The player can chose either the white (actually green on screen) or black (actually red) pieces, and can select from 4 different AI difficulties. The easiest AI plays its turns in a matter of seconds but, as the difficulty increases, each turn can take several minutes. In the highest difficulty, the AI can take up to 50(!) minutes to decide its move. To allow the player to watch something else on the TV while the system is busy, the game cart has a very special feature: an integrated red led lights up while the machine is "thinking". During the game, the player can ask the computer to help him with his next move. In those situations, the system analyses the board and plays impartially.

Ultimate Tic-Tac-Toe takes the classic game of Tic-Tac-Toe and adds a strategic layer to it. Game modes: classic, classic forget, ultimate, ultimate forget, ultimate forget total.

A Tic-Tac-Toe variant with shoot 'em up elements written by Ed Hobbs and published by Adventure International.

Academy: Tic-Tac-Toe is a tic-tac-toe game for DSiWare that features 4 variants on the classic game.

This game, written by Scott Adams and published by Adventure International, is Tic-Tac-Toe played in 3-D on a 4x4x4 playing field.