Rules Without Fear

Teach GMs when to call for a check, when to say yes, and how to make transparent rulings without slowing play.
6 min read
GM

Rules Without Fear

This lesson builds on Running Your First Scene. If you can already frame a scene with clear stakes, you're ready to handle rules with confidence.

You don't need to know every rule. Most GM calls come down to three questions: Does the outcome matter? Is success uncertain? Does the fiction justify it? Answer those, and the session flows.

What you'll learn

  • When to call for a check and when to say yes outright.
  • A simple pattern for ruling on unclear situations.
  • How to set fair difficulty without slowing the scene.

Fiction first

Fiction‑first means you describe actions in the story before touching mechanics. A player says, "I check the archive for clan records." You picture the dusty shelves, the dim light, the locked drawer. Then ask: is success interesting and uncertain?

If yes, call for a check—a die roll to see whether an action succeeds. If the outcome is obvious or already decided, skip the dice and describe the consequence—what happens after an action.

Three roll triggers

Call for a check when all three are true:

  1. The outcome is uncertain. A locked door needs a check; an unlocked door doesn't.
  2. Failure creates an interesting consequence. Missing a jump might lose time, attract guards, or force a new route.
  3. The fiction supports the attempt. If the character has no tools, the check may be impossible.

If any trigger is missing, either say yes or offer a cost without rolling.

Saying yes

"Can I climb the low fence?" Say yes. No check. "Can I recall the Duke's heraldry?" If the character studied it, say yes. If not, call for a check or offer a clue with a cost.

Saying yes preserves pace and player agency—meaningful control over character choices. Save the checks for moments that push the story forward or raise stakes.

Transparent rulings

When you don't know the rule, make a ruling—a quick decision by the Game Master when rules are unclear. Say, "Here's how I'll handle it: roll and add your Agility. Target number 12." Explain your logic in one sentence.

Players forgive gaps if they see fairness. After the session, look up the official rule if it matters. Consistency beats perfection. Note each ruling so you apply it the same way next time.

Try this (2 minutes)

Picture three situations: A player wants to remember a face, leap a narrow gap, persuade a wary merchant. For each, decide: check or say yes? If check, set difficulty—how hard a check is to succeed—as easy, standard, or hard, and name a failure consequence.

Common pitfalls

  • Calling for checks on safe or routine actions—let competent characters succeed at mundane tasks.
  • Setting difficulty without considering the fiction. A wet rope is harder than a dry one.
  • Hiding your reasoning. State your logic aloud; players will trust transparent rulings.

Do this next: Build a Tiny Adventure to practice these ruling techniques in a complete scenario.