2007 · ソースブック（プレイを拡張するルール／オプション）

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This PDF collects the first twenty-four columns by Robin D. Laws, offering practical advice for roleplaying game designers, publishers, players, and gamemasters. Topics include game design, research and preparation, running sessions, improvisation, and the relationship between roleplaying games and other media. The collection also includes two internal design documents for the GUMSHOE system, covering the creation of background settings and The Esoterrorists. The articles combine commentary and theory with named techniques and usable guidance.