Open Terrain Studios
Our first game · In designWe build worlds — and the engine that makes them
An independent game studio building worlds — and the AI-native engine that makes them.
- Open Terrain Studios — indie studio, AAA ambition
- AI-native engine technology
- Empires of the Fallen World — in design
- Build worlds at any scale
// The first world
In designEmpires of the Fallen World
Age of Empires meets an open-world survival sim.
First-person open-PvP medieval survival MMO + civilization builder — built entirely on our own AI-native engine.
// The engine that powers our games
Open Terrain Engine
An AI-native game engine — you direct an agent that writes the whole game in idiomatic, human-editable C#, and you can open and edit every line. The same engine behind Empires of the Fallen World, and you can build on it too.
- An LLM agent authors the whole game in idiomatic, human-editable C#
- Verified through a deterministic, headless loop over a model-agnostic MCP server
- Genre-general · Linux + Windows · Vulkan · .NET 10 · Steam
- Source-available / Fair Source (BSL 1.1) — not open source
// Built on Open Terrain
Made with the engine
In designEmpires of the Fallen World
More titles will appear here as studios ship on Open Terrain Engine.
// For developers
Build on Open Terrain
The full toolchain to go from idea to shipped game lands with the engine. Here's where to start.
// Join the frontier
Build with us
Whether you're following Empires of the Fallen Worldor building on the engine, we're sharing progress as it happens. Devlog and community channels open as we grow.