An excellent abstract strategy board game. Also called Gobang or Gomoku. 
Played on board with as many intersections as your mobile phone screen resolution allows (to nicely fit your mobile device screen).
The game supports statistics and has several levels of difficulty. In "Normal" and "Hard" difficulty levels the first move is made by your device, and in "Training", "For Kids" and "Easy" difficulty levels it is made by the user.
The goal of the game is to be the first one to line up a row of five crosses/outhes horizontally, vertically, or diagonally.

Available in Android Market