Content-driven
Worlds are defined as declarative content — scales, recipes, needs, buildings — not hard-coded logic. Designers ship game changes without touching the engine.
The engine behind Hearthline
Define the world as content.
Let the engine run it.
Lattice is a content-driven, server-authoritative simulation engine for building living games. Author scales, recipes, and needs as data — Lattice handles the simulation, persistence, offline accrual, and balance.
Powering Hearthline in production — play the open web beta
Capabilities
Everything a living game needs, out of the box.
Art from your data
Entities start as content; image models generate their icons and scenes. Reference art and a per-game signature keep the set coherent — and AI never touches gameplay.
Server-authoritative
Simulation runs on the server as the single source of truth. Clients render state and send intents; the engine decides what actually happens.
Multi-game by design
One engine, many games. Every entity is game-scoped, so new titles are new content packs — not new codebases.
Offline-aware
The simulation keeps advancing while players are away and reconciles deterministically when they return.
Built-in economy tooling
A balance simulator runs full playthroughs in CI, so pacing and economy regressions are caught before they ship.
Observable
First-class analytics funnels, dashboards, and alerting so you can see how real players move through your world.
How it works
Content in. Simulation out.
- 01
Author
Describe your game as content packs — scales, resources, recipes, needs, buildings — and generate matching art from the same data.
- 02
Validate
The validator and balance simulator check reachability, pacing, and economy before anything ships.
- 03
Run
The server-authoritative engine simulates every settlement, online and off, across every device.
Studio
One workbench for the whole game.
Lattice Studio is the local-first workbench where our games get built — content, art, scenes, and balance, each change validated before it ships.
Assets
Author an entity, generate its art, condition it on the existing set, then approve and promote.
Content
Edit scales, recipes, needs, and buildings in schema-driven forms with live draft validation.
Hero scenes
Compose layered scenes from approved assets and preview them across season, weather, and time of day.
Simulation
Run full balance playthroughs to catch pacing and economy regressions before players do.
Want to build on Lattice?
Lattice powers Raging Bucket's own titles today. Reach out to talk shop.