In 2000, Songbird Productions produced a sequel, Crystal Mines II: Buried Treasure on CD-ROM for Microsoft Windows. This CD-ROM required the original game and a Lynx to PC serial cable to run, allowing the editing and creation of all new levels. This was followed in 2003 by a cartridge release of Crystal Mines II: Buried Treasure with the original 181 levels and 125 new levels.
The game is played against the characters of "Dynasty Warriors Series," Koei game based on the Sanguo Zhi in China, but it is an authentic mahjong game which adopts an algorithm that does not have a kind of insane technique that is common in character mahjong games. This game is based on the mahjong software "Mahjong Taikai" released by Koei.