Using the DownShift SystembookIntroduction to the Passages. The biggest challenge in RPGs today is this specific point. Publishers think they want all GMs to run roleplaying games as "Rules as Written", and therefore maintain intellectual property control of content (meaning allowing only their own playtest people to create the rules for EVERYTHING). Generally, players want to BE the playtest people, to see what their ideas will do against a constant, stable background, with their creativity primary in the decision-making process to drive the story (Sandbox). Novice gamemasters want to tool around the rules for their own playtest, with their ideas of how the adventures develop (Railroads). Nycos Adventures are the fourth option, None of the Above.