Build a world. Play in it.
It remembers everything.

From first spark to hundredth session.

Describe the world in your head—dying empire, space western, haunted coastal town—and it becomes a living place with real mechanics, real characters, and real consequences across every session.

Your World, From a Conversation

No forms to fill out, no wikis to pre-write. You talk about your world and the engine derives classes, skills, factions, and geography—all consistent with your vision.

Discover Your World

Evocative questions unearth the soul of your setting—its tensions, its history, what makes it alive.

Power Takes Shape

Classes and skills derived from world logic. A dying-magic setting gets Remnant Mages; a space western gets Void Navigators.

Geography Unfolds

Regions, landmarks, and a starting location emerge from the essence of your world.

Your Character

Narrative-first, mechanics-second. Who you are matters before what you can do.

Play

60–90 minutes from concept to adventure. Everything else emerges on-demand as you explore.

Not a Chatbot—A World

In a chatbot, the blacksmith exists only as long as the conversation. In WyrdTale, he has psychology, secrets, a home he goes back to at night, and a relationship with you that evolves over time.

Session 3

You show the binding mark to the blacksmith. He flinches—hard—and turns back to his anvil. Won't explain. Changes the subject twice. Offers you a discount on a sword you didn't ask about.

Behind the scenes: Garrett the Smith — former acolyte who fled the Unbound Circle when he saw what the bindings really held. Guilt drives his charity; terror keeps him silent. He still has the key to the inner sanctum, and they think he's dead.

Session 12

You return to Garrett's forge. He sees you come in and—for the first time—closes the shop door. He remembers you. Remembers the mark. Something has shifted: he reaches under the anvil and slides a tarnished key across the workbench.

His psychology, his secrets, your evolving relationship—all tracked. Garrett didn't forget, and neither did the world.

NPCs vanish between sessions. You re-explain who they are every time.

Every NPC persists with identity, psychology, secrets, and relationships that evolve as you interact.

Combat is vague narration. “You deal some damage.”

Real dice, real stats, real resource tracking. Your fire strike does 2d8+3, crits on 19, and applies Burning for 2 rounds.

The story resets when the context window fills up.

The world saves to a file. Load it next week, next month, next year.

Systems That Grow With You

Living Relationships

Every relationship tracks dynamics, catalysts, and secrets. Betray the merchant guild and the system remembers why an assassin shows up six sessions later.

Skills That Evolve

Use “Channel Elements” to create fire walls three times and the system offers to crystallize “Wall of Flame”—a specialized skill shaped by your playstyle.

A World That Doesn't Pause

Mechanical time tracks dawn and dusk, recharges abilities, and sends NPCs home at night. Visit the tavern keeper at midnight—she's not there.

Fair Combat, Real Danger

Real dice rolls, real resource depletion, enemies that fight to win. Unconsciousness and death are on the table.

What to Expect

Theatre of the mind. Your imagination does the rendering. No maps, no sprites—just prose and possibility.
Your world, your work. There are no pre-written campaigns. The world exists because you imagined it.
Requires a Claude subscription. WyrdTale is free during open beta. You'll need Claude Pro or Max to connect.
Text-based and session-based. Save before you close. Everything persists between sessions.

Get Started

Connect WyrdTale to Claude in under a minute:

Open claude.ai or Claude Desktop
Go to Settings → Connectors
Click Add custom connector and enter https://wyrdtale.com/mcp
Start a new conversation, enable the connector, and say “start a new game”

Alternative: Claude Desktop via mcp-remote

Add this to your Claude Desktop config file (requires Node.js):

{
  "mcpServers": {
    "wyrdtale": {
      "command": "npx",
      "args": ["mcp-remote", "https://wyrdtale.com/mcp"]
    }
  }
}

Other MCP clients

Any client supporting remote MCP servers can connect to https://wyrdtale.com/mcp

Recommended models: Sonnet 4.5 or Opus 4.5 with extended thinking.

Build a world. Play in it.It remembers everything.