Similar to the 1993 mahjong solitaire game Toride, Dragon World changes the traditional mahjong solitaire formula by having players take valid tiles from the multi-layer board into their seven-tile hand in order to form matching triplets.By default, the game has an undressing system enabled where the background scenery is replaced with a hand-drawn picture of a scantily-clad woman, who strips as players complete stages.It later received three sequels: Dragon World II, Dragon World 3, and Dragon World 2001.