R Mahjong - Riichi Mahjong

R Mahjong is a comprehensive Japanese Mahjong (Riichi Mahjong) game featuring a powerful AI ranked stable Dan 6.8 - 7.0, outperforming 99.7% of players on tenhou.net. It offers a learning mode with AI hints, detailed game statistics, and LAN multiplayer via Wi-Fi allowing play with combinations of people and bots.

The game closely follows standard Japanese Mahjong rules including open tanyao, red fives, atozuke ari, and double ron. It supports English and Japanese languages, and provides game recording and playback from any player’s perspective. Users have control over advertising types and the extension is entirely free to use. For full gameplay instructions, visit http://riichimahjong.net/rules/.