Gomoku Pro

Gomoku also called Five in a Row, is an abstract strategy board game. It is traditionally played with Go pieces (black and white stones) on a Go board. ... The game is known in several countries under different names. Players alternate turns placing a stone of their color on an empty intersection.The winner is the first player to form an unbroken chain of five stones horizontally, vertically, or diagonally.

Recent changes:
Updated version with awesome graphics and more challenging levels.