Perhaps It's A Novelventure?
Is it a story? Is it an adventure? Or . . . is it both? (Spoiler: It's both.) GURPS Classic: Deadlands Dime Novel 2 – Wanted: Undead or Alive starts with a story set in the Weird West, and then adds GURPS Deadlands information to run that tale at your gaming table. Who can stop Sean Bailey's revenge from beyond the grave? Find out with a download from Warehouse 23!