Realistic Geopolitical Simulator

What is Terra Engine?

Terra Engine is a geopolitical sandbox where you can step into the role of a world leader or simply observe a living world evolve, built from factual data and a historical timeline.

Each leader acts autonomously, pursues their own objectives, and reacts to the world’s political, economic, and diplomatic developments.

Start from a historical situation, influence how it unfolds, or simply let the world follow its own path and give rise to an alternate history.

Hybrid AI: Agents and Narrative

Published on 4/8/2026

In Terra Engine, every actor in the simulated world is driven by AI, while an optional generative layer reveals motivations and strategies in a hybrid and clearly narrated experience. Language models can run locally or through a cloud provider.

Technical AI v0.0.21

Hexagons at the heart of the simulation

Published on 8/22/2025

Terra Engine models the world with an H3 hexagonal grid: technical advantages, current uses, and what it means for geopolitical simulation.

Technical Hexagonal grid

A realistic geopolitical simulator

Published on 5/10/2025

A geopolitical simulator combining historical data and AI to model the world. Explore 200+ countries and create your own scenarios.

v0.0.15

Explore a Living Geopolitical Sandbox

Data and Historical Timeline

Nearly 8,000 entities, 10,000 time series, and 2,000 historical entries make it possible to reconstruct the world at different dates and provide a consistent context for both simulation systems and AI agents.

Real History or Alternate Paths

Choose how closely the world should follow its historical evolution. Preserve the major real-world trajectories or let decisions, events, and agents give rise to a different history.

Evolving Political Systems

Regimes, elections, successions, institutions, and power dynamics evolve over time and influence the range of actions available to leaders.

Dynamic Macroeconomy

GDP, unemployment, debt, and other indicators evolve over time and shape the economic context in which countries and leaders must act.

Diplomacy and International Relations

Relations between countries and leaders evolve according to their actions, opinions, and interests. Diplomacy, political stances, and exchanges contribute to reshaping the international balance.

Geopolitical Issues and Crises

Nuclear programs, disputed territories, spheres of influence, and other issues shape the interests of actors and can give rise to crises, with camps, objectives, and autonomous reactions from leaders.

Events and Narrative

Major developments in the world are presented through notifications, narrative scenes, and interactive events that may require a decision or simply be observed.

Natural Disasters

Historical earthquakes, cyclones, and volcanic eruptions can affect territories and populations, with localized impacts visible on the globe.

Autonomous AI Agents

Each leader acts autonomously. Hybrid AI makes it possible to choose between a standard mode or language models, running locally or through the cloud.

Integrated AI Tools

A conversational assistant supports the user, while an AI journalist generates news based on the state of the world and its events.

Modding and Customization

Add events, scenarios, properties, translations, and new mechanics. Terra Engine is designed as a modular and extensible platform.

Screenshots