I am a backer for the kickstarter of Sig: Manual of the Primes. This review is based on reading through the PDF but not having played it at the table yet. Sig appraches world and character building with dedicated rules that lean on games like Burning Wheel and Fiasco to create interesting characters and NPC's. The rules push the players to explore their character motivations and in turn shape the world around them. I would recommend anyone intersted in character driven stories and shared setting creation check out Sig: Manual of the Primes.