iGobang Five Free is an abstract strategy board game. Also named Gomoku or Five in a Row, it is popular in Asia.

During the game, black plays first, and players alternate in placing a stone of their color on an empty intersection. The winner is the first player to get an unbroken row of five stones horizontally, vertically, or diagonally.

Gobang is traditionally from ancient China and developed from Japan. And in the beginning of the century, Gobang was introduced to Europe and popular there. Gradually, the game is complex and normalized, so as to become today’s professional board game.

Finally, there are two modes, two-player mode and man-machine mode.

Two-player mode: two players play on the same iPad.

Man-machine mode: support normal, classic and crazy, 3 levels.

Main features:
Undo: Two-player mode needs two players agree to undo.
Man-machine mode: undo 3 steps for normal level, 2 steps for
classic level and 1 step for crazy level.
Draw: Two-player mode needs two players agree to draw.
Man-machine mode: computer will draw based on the whole game
situation.
Lost: there is a hint for both two-player mode and man-machine mode to confirm whether itself is lost, not the opposite one.