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Chapter 2: Tools / Building Worlds / Design Approach

Bottom Up

Source Gamemastery Guide pg. 122
With a bottom‑up approach to world building, you start small and local. Focus on the starting location and immediate needs of your campaign, then expand outward as the story unfolds. This strategy works well for those with less time to devote to world building, as you need to prepare only the minimum detail necessary to entice your players toward adventure, fleshing out your world only as the campaign requires it.