How to Write a Game Bible: The World-Builder's Template

A Game Bible is the single document that defines your world. It's what the AI Game Master reads before your first session begins, what it refers back to when a player asks an unexpected question, what it leans on to keep the world consistent across thirty hours of play. A great Game Bible produces consistent, immersive storytelling. A vague one produces a Generic Fantasy Experience™ — every world becomes interchangeable, every NPC sounds the same, every scene drifts toward the median of the model's training data.

This post is a practical, fillable template. By the end, you'll have either a complete Game Bible draft or a clear understanding of what's still missing. Whether you're writing a new world from scratch or polishing one you've been incubating for years, the structure below is what we've found produces the best AI GM behaviour. It's also short on purpose: a great Bible can be six to ten pages. You don't need a hundred. The AI doesn't read better with more text — it reads better with denser text.

What Goes in a Game Bible

Think of your Game Bible as answers to six questions:

1. What kind of world is this?
2. What's wrong with it right now?
3. Who are the major players?
4. What does it feel like to be here?
5. What are the rules?
6. Where does the story start?

If your draft answers all six clearly and specifically, you have a playable world. If any of them is vague, the AI GM will fill the gap with the most generic version of that thing in fantasy fiction. The whole point of a Bible is to crowd out the generic with your specific.

Section 1: World Overview (1–2 paragraphs)

Name your world. Describe its scope (one city? a continent? multiple realms?). Give the historical period feel — medieval, Renaissance, post-apocalyptic, secondary-world modern, near-future, far-future. State the dominant tone: gritty and realistic, high fantasy, cosmic horror, political thriller, fairy tale, slice-of-life. Pin the geography just enough that the AI knows the shape of the map without needing every contour.

Example: "Valdenmoor is a decaying empire in its third century of slow collapse. Think late Roman Empire crossed with the Venetian Republic — bureaucratic corruption, mercenary armies, fading gods. The capital is a port city built on the ruins of three older cities, layered like sediment. Travel between provinces is by river, road, or in expensive cases, by airship. The tone is dark and political, with occasional moments of unexpected grace. Magic exists but is rare, slow, and treated with suspicion."

The reference to specific real-world analogues is important. "Late Roman Empire" gives the AI a coherent texture to draw from in a way that "ancient kingdom" never will. Don't be afraid to cite influences. The AI recognises them and uses them as scaffolding.

Section 2: The Central Conflict

What is the one tension that defines the current moment in your world? This should be specific and active — something that is happening right now, not ancient history. The conflict is the engine. Without it, the world is a museum.

Example: "The Emperor just died without an heir. Three Archduchies are mobilizing armies. A fourth is secretly negotiating with a foreign power. The Church has declared it will name the next emperor from among the clergy. Civil war is two weeks away. No major faction is ready, but none can afford to wait."

Notice the temporal specificity — "two weeks away" gives the world a clock. The AI will use that clock. Scenes will reference it without you having to tell them to. The pressure stays on without any extra effort.

Section 3: Factions (3–5)

For each faction, write 2–3 sentences covering: who they are, what they want, and what they're willing to do to get it. Don't write histories — write current agendas.

A faction template that works well:

• Name (and what people call them informally)
• Public goal (what they say they want)
• Real goal (what they actually want, if different)
• Willing to do (what's on the table — bribery, assassination, alliance with a hated rival, public scandal)
• Won't do (the line that defines them)
• Internal weakness (the thing that could fracture them)

Three to five factions is the sweet spot. Two feels binary; six feels like homework. Each faction should have at least one other faction it considers an enemy and one it considers a complicated ally — never simple goodwill, never simple hatred.

Section 4: Tone & Sensory Language

Give the GM a list of sensory details specific to your world. What does the capital city smell like? What sounds fill a tavern? What does magic look like when cast? What's different about the way the rich and poor districts smell, sound, look? What does the dominant religion's incense smell like? What's the texture underfoot in the marketplace?

These details make the difference between generic narration and immersive storytelling. The AI is excellent at picking up sensory cues from the source material and weaving them naturally into descriptions, but only if you provide them. Three sentences of sensory detail per major location goes a remarkably long way.

A good practice: write a single sentence that captures each location's "first ten seconds" — what does a visitor notice first? "The Spice Quarter announces itself at fifty paces by the smell of cardamom, dried fish, and burning sandalwood; under that, the constant clatter of small handcarts on cobble." That sentence will inform every scene set there.

Section 5: Rules & Constraints

What can't happen in your world? What are the hard limits? Examples:

• "Magic is rare and feared — nobody casts spells openly"
• "This world has no elves or dwarves — all characters are human"
• "Death is permanent and treated with gravitas — no resurrection magic"
• "Technology is equivalent to 1400s Europe — no gunpowder yet"
• "There are no gods, but there are ancient creatures people sometimes mistake for gods"
• "Travel between continents takes weeks; teleportation does not exist"

The GM will respect these constraints throughout your campaign. Constraints are clarifying. They make the AI's improvisation tighter because it has fewer easy outs.

The most powerful constraint is usually a "no." A "no resurrection" rule means deaths matter. A "no gunpowder" rule means battles have a specific shape. A "no telepathy" rule means information has to travel at the speed of horses. Each constraint produces interesting downstream consequences in play.

Section 6: Opening Scenario

Describe the first scene in 2–3 sentences. Where is the player character? What's immediately happening? What's the first decision they need to make?

Example: "You're a junior aide in the Imperial Chancery on the night the Emperor dies. The chamber is in chaos. A high-ranking official just handed you a sealed letter and asked you to deliver it to the Archduke of the Northern Reach — without telling anyone. You don't know what's in the letter, but you can see the official is sweating and a guard captain is pushing through the crowd toward you."

The opening scenario should drop the player into immediate, mid-stakes action with a specific choice. It should not start with "you wake up in a tavern." Anything-but-a-tavern is a useful guideline here.

Section 7 (Optional): Pronunciation Notes

If your world has invented names with non-obvious pronunciations, list them with a phonetic guide. The AI can use these to keep narration consistent. "Aeryndel — pronounced AIR-in-del. Tovaryn — TOH-vah-rin. The capital, Khel-im-Karras — KEHL-im-CAR-ras." The model will respect these once they're written down.

Uploading Your Bible

EchoQuest accepts Game Bibles as plain text, PDF, or DOCX files up to 10MB. The AI parses your document, extracts the world data, and creates a playable campaign. Plain text is preferred for fastest processing, but well-formatted PDFs work too.

After upload, you can preview how the AI has interpreted your world before publishing. This is a good moment to spot anything missing — if the AI's summary of your factions sounds vague, your faction section probably needs to be tighter. Iterate, re-upload, repeat.

Storyteller plan and above includes Bible upload access. See plans →