Jadeclaw is the successor to the Ironclaw RPG, and uses the same system. Changes include more "traits" (martial arts), and there are now non-mammalian "races". There are now Birds, Reptiles (Snakes and Tortoises), and races from Chinese Mythology (such as Dragons). There are also some strange servitor races of insects (scorpions, centipedes, etc.), which are strictly NPC's (Non-Player Characters).
Read more about this topic: Ironclaw