LIVING WORLD SIMULATION ENGINE FOR TTRPG

Your maps are just drawings.
Give them a pulse.

Strata Weaver is not a map-making tool. It is a simulation layer that transforms static maps into living worlds. Imbue your geography with deterministic weather, physics-based travel, dynamic ecosystems, and inspiring events.

Official Foundry VTT Module.
Compatible with any VTT, Map Maker or Worldbuilding Tool workflows.
Closed Beta and Limited Founder Offer coming soon. One-Time Payment. No Subscriptions.

"How long to get to the Mountain?"

You hate that question. You pause the narration, check your notes, count hexes, roll dice for weather, and calculate terrain modifiers in your head...

The immersion breaks. The tension dies. And your beautiful map remains frozen in time, offering no help.

Stop calculating physics in your head. Let the engine handle the logistics while you focus on the storytelling.

Don't just draw. Simulate.

Bring Your Own Maps

Export from any VTT or scan your hand-drawn sketch. Strata Weaver is the invisible layer that sits on top.

Paint the Meaning

Use our Strata Brushes to define regions. Tell the engine: "This is a forest," "This is a lake." Translate your lore into simulation data.

Living World

The engine takes over. It calculates travel times based on the surrounding conditions, generates weather patterns, and moves entities or factions based on logic.

The Architecture of Reality

Tools for narrative coherence and deep immersion.

A Climate That Reacts:

Deterministic Weather Engine

Not just random dice rolls. Our engine runs a full meteorological simulation based on DM's preferences, seasons, latitude, and lunar cycles. If it rains today, the roads are muddy tomorrow. A climate that reacts, not just happens: your world emerges with meaning.

Tactical Logistics:

Physics-Based Travel Calculator

Forget counting hexes. Draw a path and get instant, exact travel times based on terrain friction, road quality, and current weather conditions. The date advances, moons orbit, and seasons shift. Travel is more than distance: math is for computers, storytelling is for you.

Dynamic Ecosystems:

Faction & Monster Migration

Define factions, migration routes, and behavioral patterns. Configure who hunts whom and who fears whom. Let the simulation generate inspiring encounters that make narrative sense. Monsters don't spawn, they live here: the world moves with you.

Scalable Depth:

Deep Customization

Just want to play? Use our standard presets. Are you an obsessive architect? It's your world; as deep as you need it to be: geography, calendar, seasons, lunar orbits, recurring events... Then, Strata Weaver takes care of the rest.

Official Foundry VTT Module

Connect your virtual tabletop without friction using the 'Strata Weaver Bridge' official module. Export your world data (Scenes, Notes, and Journals) directly into Strata Weaver, and bring your daily simulations—weather forecasts, tactical overviews, and events—straight into your Foundry VTT chat with a single click.

Foundry VTT Compatible

Don't replace your VTT. Give it superpowers.

Strata Weaver runs on your second browser or monitor, acting as the "Dungeon Master's Co-Pilot" and feeding you real-time data while you run the scenes or combats on your favorite tabletop.

Compatible with any VTT, Map Maker or Worldbuilding Tool workflows.

Own Your World. Forever.

We reject the subscription model. Your creativity should not be rented.

Local-First Architecture

Your data lives on your device.

One-Time Payment

Buy once, keep for life including updates.

Offline Capable

No internet required to run the simulations.

The Knowledge Base

Is Strata Weaver a Virtual Tabletop (VTT) like Foundry or Roll20?

No. VTTs are designed for tactical combat, character sheets, and dice rolling. Strata Weaver is a Simulation Engine for world logistics and environmental dynamics. It runs on a second screen acting as your "Dungeon Master's Co-Pilot," feeding you real-time data (weather, travel duration, faction movements) that you then narrate or apply in your VTT session. It complements Foundry VTT, Roll20, Owlbear Rodeo, AlchemyRPG, or TaleSpire perfectly.

Can I draw maps from scratch like in Wonderdraft or Inkarnate?

No. Strata Weaver is not a drawing tool; it is a definition tool. You import your finished map image (exported from Inkarnate, Wonderdraft, DungeonFog, Dungeondraft, or Canvas of Kings, or hand-drawn scans) and use our brushes to "tell" the engine what the terrain *is*, not what it *looks like*. You paint meaning (e.g., "This area is a Swamp with spiders"), and the engine calculates the physics.

How is this different from World Anvil, LegendKeeper, or Obsidian?

Those tools are excellent for Static Lore (wikis, history, text). Strata Weaver handles Dynamic State (current weather, exact travel duration, active faction migration, posible events, etc). You use Obsidian to write *who* the goblins are; you use Strata Weaver to know *where* they are migrating right now and if a storm is hitting them.

Does it work with D&D 5e, Pathfinder 2e, or OSR systems?

Yes, it is System Agnostic. Strata Weaver does not manage character sheets or specific rulebooks. Instead, it acts as the impartial referee of the environment. It tells you the *result* of the simulation (e.g., "Ground is Muddy", "Visibility is Poor", "Cover is Great", "Stealth is Impossible", "High Chance of Goblin Encounter"). You simply interpret these results using your system's rules.

Do I need an internet connection to run the simulation?

No. Strata Weaver is built with a Local-First architecture. Your world data lives on your device, not on our servers. Once the app is loaded, you can run complex climate and ecosystem simulations offline, ensuring zero latency during your games and total privacy for your campaign data.

Does it support 3D maps from TaleSpire or isometric maps?

Yes. Since Strata Weaver works with 2D image projections (top-down), you can simply take a top-down screenshot of your TaleSpire board or isometric map, import it as the base layer, and paint the simulation data over it. The engine simulates the logic regardless of the visual style of your base map.

The Path Ahead

Current

The Vanguard

Waitlist & Community Building.

Private Beta

Selected testing for stability.

Playground & Founder Launch

Limited time offer.

Public Release

Global availability.

Ready to weave reality?

Join the Waitlist to get priority access to the future Closed Beta and the exclusive Founder Price.