Lobo Blanco is a role-playing game set in the world of Elric of Melniboné, the most famous character from author Michael Moorcock. In this game player characters seek their Destinies while generating Resonances (repercussions) that transform the world into a dynamic place. The GM (Guide of the Multiverse) uses Reactive Game Mastering and develops narrative threads created by the players and their characters themselves.
Simple mechanics that generate a meaningful game. Download it for free here:
Some player reviews:
More info:At RPG Geek