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The Systemic Architect

World simulation (simulationist) · The rulebook is physics, and the world is built.

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Your world is detailed down to its trade routes, with the rulebook as its physical laws. Careful players realize everything was indeed there and follows the rules. Mastery is the ultimate satisfaction.

Your best-fit players: The Systemic Realist. Both want a world whose rules hold, so skill and preparation matter and consequences stick.

World simulation is a branch of simulationism, with GURPS as its textbook case. It wants its settings to behave like a realistic location: rules equal physics, and consistency is the reward.

What you do well

  • Players' plans rely on a world behaving consistently.
  • Players can rely on the rules too, so a well-reasoned plan works as expected.
  • Investigations do produce results, because whatever players discover was indeed there.

Where your style trips

Letter over spirit: adhering to the text when the table dislikes the result, or halting play to find a rule.

The fix: Limit rule searches to about 30 seconds, then make a call and keep going. Look it up properly after the session.

Things to practice

  • Hand rules research to a player so you can focus on the table.
  • Prepare what players need next session, and leave the map's far edges for later.
  • Run a lighter system. A second one shows which habits belong to the game and which are yours.

Who you'll click with

Players who lean Tactician, Specialist tend to love your table. Casual Gamer, Method Actor players may need some conversation first. Most players span several of Robin D. Laws's player types.

Players who'll love your table

Talk it through first
The Arc Protagonist. Agree on whether a character's big moment can override a roll, or whether the system's results always stand.

Get your players to take the player style quiz

How to prep

Do the thinking early: factions with agendas plus a one-page campaign concept shrink weekly prep to about 20 minutes. Next session gets detail, the rest a sketch.

Pitch your table with these

On screen
Game of Thrones, The Matrix, Dune, Andor, The Name of the Rose
Actual play
Long-running campaigns with a heavily documented setting, rules-as-written play and a lore wiki players actually read.
Games
Traveller, GURPS, RuneQuest, Ars Magica, HârnMaster, Twilight: 2000

A culture of play describes a table, so one 5e group could sit in two cultures on two Tuesdays. From John Bell's "Six Cultures of Play".

The 6 GM styles

Glossary

Clock
A named circle of 4, 6 or 8 segments. When it's full, that thing happens.
Fail forward
Failure still moves the scene, at a cost. Luke Crane's phrase, from Burning Wheel.
Front
A prepped threat, Apocalypse World style, with an impulse and a countdown clock.
Lines and veils
Limits set before play. Lines keep content out; veils keep it off-screen. Ron Edwards, 2003.
Neo-Trad
Trad since about 2015, in two kinds: collaborative (a shared point pool) or tactical (packaged abilities, rules-fluent GM).
Oracle
A yes/no procedure for GM-less play, with odds you set and a chance of a twist.
OSR
Old School Renaissance: classic dungeons, modern player-facing design. Player skill tackles the game, referees use common sense, failure buys information.
Session zero
A meeting before play to set expectations and limits, often building characters together.
Story games
A culture of player authority: players trigger flashbacks, successes can win narrative control, and GMs often don't roll.
Trad
A storyteller GM with a plot. Mechanics mostly serve combat; the story sits above them.
X-Card
Anyone can tap it to cut content, no questions asked. John Stavropoulos, 2012.

Credits and further reading

Based on John Bell's "Six Cultures of Play" (The Retired Adventurer), Robin D. Laws's player types, Christopher Chinn's Same Page Tool, Justin Alexander's The Alexandrian and Sandy Petersen's horror advice.