In early 2010, I game-mastered an nine-session mini-campaign of Lacuna. The game, by Jared Sorensen has the full title of "Lacuna Part I (Second Attempt)" (subtitled "The Creation of the Mystery and the Girl from Blue City.") This is short for many campaigns, but it was long compared to most people's play of Lacuna - where you play agents who wake up each session with no memory of who they are.