Free online mahjong game with various rulesets and modes, ranking, and statistics tracking
OGS Mahjong is a free, open-source online mahjong platform developed by the Online-Go.com team. It allows players to compete in mahjong games against others around the world right from their web browser.
The software features multiple popular rulesets including Japanese, Chinese, Hong Kong, and Riichi rules. Games can be played with 2 to 4 players. There are ranked competitive matches as well as casual games available.
User accounts track personal statistics like winning percentages, ranks, and more. The site holds monthly tournaments and leagues. There is also a spectator mode to observe high level games. Chat and friends lists allow for player interaction and community building.
As an open-source project, OGS Mahjong is constantly evolving with new features and improvements driven by community feedback. The software is available to download and self-host for free. Overall, OGS Mahjong aims to provide a full-featured and accessible platform for mahjong enthusiasts around the world to play competitively or just for fun.