Tic Tac Toe King
Description
Tic Tac Toe King is based on the game of Tic Tac Toe, in which the aim is to beat your opponent by being the first to get 3 O's or 3 X's (depending on which the player is playing) in a row, either vertically, horizontally or diagonally, whilst at the same time keeping the opponent from doing the same in 9 different in game levels.
In addition to solo play against the AI, there is also a two player mode that can be played on a single device and a one-on-one mode that can be played against anyone in the world. The Android version also features global leaderboards, accessible via Google+.