The words combinatorial explosion have probably never come up in a video game storytelling talk as many times as they did with BioShock creator Ken Levines Narrative Legos. At the 2014 Game Developers Conference in San Francisco, Levine outlined an ambitious — if vague — idea for endlessly replayable, systems-based stories that he compares to a player-driven episode of Game of Thrones. The hallmark of Levines BioShock series is carefully paced, twist-driven story lines, but thats something he seems finished with for now.