Inspired by The Outspaced Shrine, I decided to map my gamebook ventures using Graphviz. Transcribing my written notes into the new format is tedious, but I have a high tolerance for monotony. I've only completed one so far: the first volume in The Cluster of Echoes series, Nightshift (which I talked about here).
You can get it in svg or svgz format. Needless to say, it contains spoilers!