Masks: 1,000 NPCs for Any Roleplaying Game is what it says: 1,000 NPCs ready to be dropped into any game. While they don’t have any stats (like Eureka, the book is systemless), you’ll find each NPC has a full name, a brieft summary, a quote from the character, appearance, roleplaying advice, a description of personality, motivations, background, and a set of traits (that are shared across multiple entries.)