From the introduction:
Hello, and welcome to the home page of Arumo, the Kingdom of Wilted Flowers. Arumo is a role-playing game set in an exotic world of organic technology and decadent empires, designed to recreate the feel of epic fantasy, complete with heroic quests, evil lords, and terrible monsters, without the typical genre trappings of elves, dungeons, and orc armies.
Arumo originally was intended as a full role-playing game with setting but eventually completed development as a setting for a d20 mechanic. In addition to the setting proper, the rules include variants for setting-specific Character Classes, Equipment, Miscellaneous Rules, and spells.