🧠 The D&D Prep Method That Is Actually GENIUS (And Why It Works)
Have you ever felt trapped in the DM paradox? You either over-prep and railroad your players, or you under-prep and your sessions feel hollow.
Well, Dungeon Master Brennan Lee Mulligan (of Dimension 20 fame) cracked the code, and it all comes down to his philosophy of "making toys."
This isn't just "prep less." It's optimized prep that works with how your brain is actually built.
🧱 The "Toymaker" Approach
Most DMs prep like architects—trying to draw detailed, rigid blueprints for every scene and conversation.
Brennan preps like a toymaker.
Instead of scripting scenes, he creates modular, reusable components (his "toys") that can be dumped into the game regardless of where the players go.
* The Toy: A reusable NPC, location, or monster.
* The Goal: Define its core properties (motivation, personality, immediate goal), but never its scripted dialogue or predetermined outcomes.
Think of a toy fire truck: the designer had no idea what story the kid would invent, but because it has core characteristics (it's red, it has a ladder), it works in any scenario.
💡 Why Your Brain Loves Modular Prep
Trying to improvise everything on the fly makes your games shallow. It's not a lack of creativity—it's cognitive overload.
Your brain's working memory (where real-time thinking happens) is severely limited (4–7 chunks of info). A DM is already maxed out just tracking initiative, player actions, NPC knowledge, and the current mood!
🧠 The Cognitive Cheat Code
* Stop Extraneous Load: Writing detailed dialogue and scene descriptions creates extraneous load—unnecessary information your brain has to dig through and discard when players inevitably go off-script.
* Internalize the Pattern: When you focus only on an NPC's core motivation, you move that information from messy notes into your long-term memory as a pattern.
* Automatic Generation: When the players talk to that NPC, you're not searching for the right line you wrote; you're generating a response based on an internalized understanding of who that person is. This is largely automatic, freeing up your working memory for real-time creativity!
✨ Unlock the Flow State
By freeing up working memory, you make space for the truly magical part of DMing: Flow State.
Flow is that moment when DMing feels effortless, ideas flow naturally, and descriptions are perfect.
Brennan's method facilitates Flow because it ensures you have:
* Clear Goals: The modular toys (NPCs/Scenarios) have clear, active goals.
* Immediate Feedback: Player reactions tell you instantly what's working.
* Balanced Challenge: You have your tools ready ("toys") so unexpected player actions feel manageable, not overwhelming.
📝 How to Make Your Own "Toy" NPC
Stop asking "How much should I prepare?" and start asking "What kind of preparation will allow me to improvise?"
Here is a simple template to create a modular NPC:
1. The Two Core Questions (The Engine)
* What do they want? (e.g., To be recognized as the ultimate expert.)
* How do they pursue it? (e.g., By obsessively verifying every single detail, which makes them incredibly slow to publish anything.)
2. Performance Hooks (To make them easy to roleplay)
* Physical Detail: (e.g., Their hands are always stained with ink; they write notes on anything nearby—napkins, walls, the dirt.)
* Speech Pattern: (e.g., They constantly correct themselves mid-sentence, even over tiny details: "I was there 3 weeks ago... no, wait, 17 days.")
3. An Active Problem (The Immediate Tension)
* What is happening right now? (e.g., A rival just published a decent, but flawed, map of the region they've been working on for three years. Their life's work is about to be made obsolete.)
And voilà! Your toy is ready. Need a guide? They can guide you. Need a quest giver? They need help solving their Active Problem. They'll react to any situation based on their internalized Core Motivation.
