From the ConCraft Mahjong Series - Hong Kong ConCraft.

* Ultra STRONG AI.
* Comprehensive, detailed, localized rule - edit at will.
* Traditional mahjong OR mahjong with Con-Cards.
* Con-Cards further tests your ability to adapt in-game.
* Standalone mahjong.
* Friends can join your table through Wifi.
* Con-Cards allow you to legally cheat.
* Beginner to ultra strong AI - AI never cheats (other than legally with Con-Cards).
* Proprietary AI assisted play.
* Cantonese and mandarin voice overs.
* Cantonese, Mandarin, simplified, traditional and English support.
* Free to play.