Denis Defreyne

SPERM model for worldbuilding

Up: Worldbuilding

SPERM stands for (among other things):

  • Social: What do people do in their spare time? What is the structure (hierarchy) of families and friendships? What are the traditions and customs?

  • Political: What is the power structure/hierarchy?

  • Economic: How do people sustain themselves? Where do assets come from? How is trade? How is wealth distributed?

  • Religious: What are the beliefs? What is the moral system? Who enforces them?

  • Military: Who is enforcing the standards? Who is handling inside and outside threats?

Open questions

  • Where does culture fit in?
Note last edited May 2025.
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