Online Go game. Free multiplayer GO game for you to play online! Play against go players from all around the world! players online. ADVERTISEMENT. Product Description. Go originated in China more than years ago. But it was the Japanese who perfected it and made Go a great strategic skill game. On this site, you can play 5×5 to 19×19 Go (a.k.a. Igo, Baduk, and Weiqi), which is a well-known ancient board game. If you do of go) first, and then try a 5×5 game that is just right for a beginner like you. Japanese Rules(Territory scoring). In Go, rank indicates a player's skill in the game. More recently, mathematical rating systems similar to the Elo rating system have been introduced. Thus, the net result given by the two scoring systems rarely differs by more than a point. A repetition of such exchanges is called a ko fight. In the latter case, the enemy group is captured, leaving the new stone with at least one liberty.