Koi Koi Mahjong is a board/card game for the Neo-Geo Pocket Color. It was developed by Visco and published by SNK.
Koi Koi Mahjong is extremely rare. While this doesn't guarantee that the title is sought after by collectors, it does guarantee that the title is nearly impossible to come by, and is likely sought after by collectors desiring a complete collection for the Neo-Geo Pocket Color. In good condition, the game is worth about $250.00. Koi Koi Mahjong was released on 3/9/2000.
Koi Koi Mahjong was not released in the United States.