Tic Tac Toe 3D is a board game available on iPhone that can be played alone, with a friend, or online. The objective of the game is to align 3 to 5 pawns, depending on the chosen grid. There are three types of grids to choose from: Classic Mode (3x3), Gravity Mode (3x3x3G), and Cube Mode (3x3x3).

As you progress in solo mode, the dimensions of the grids evolve from 4x4 to 5x5. The Cube Mode, with its 3x3x3 grid, has a unique twist where the goal is to create a maximum line of 3 pawns to win the round.

The game offers 4 different game modes. In 1 Player mode, there are 9 levels of difficulty to complete in order to unlock higher grid sizes. In 2 Players mode, you can play with another person on the same device. The Training mode allows you to play against the computer on 4 difficulty levels. And finally, the Online mode lets you play with another person via Game Center.

Please note that this game contains advertisements. However, you have the option to make an In-App Purchase to unlock all the grids and remove advertisements completely.