What is OpenTTD used for?

OpenTTD is an open-source transport simulation game based on Transport Tycoon Deluxe, available for Linux, macOS and Windows. It is a good fit for playing a transport management simulation and running multiplayer games with friends.

Is OpenTTD open source?

Yes. OpenTTD is open source under a custom licence. Its source code is on GitHub at OpenTTD/OpenTTD and is written mainly in C++.

Yes. OpenTTD is open source, so the software itself is free to use under the terms of its own licence.

Can I self-host OpenTTD?

Yes. OpenTTD can be self-hosted on your own server or infrastructure.

What are some alternatives to OpenTTD?

Similar open-source tools in the Games & Emulation category include Sunshine, RPCS3 and Lichess. SaaS products in the same category include Apex Legends, Counter-Strike 2 and CurseForge.

Is OpenTTD actively maintained?

Yes. The most recent commit to OpenTTD was on 2 October 2026, and the latest release is 15.3, published on 4 April 2026. The project has 8.3k stars on GitHub.

OpenTTD: open-source games & emulation

About OpenTTD

OpenTTD is an open-source transport simulation game based on Transport Tycoon Deluxe, written by Chris Sawyer. It aims to stay as close to the original game as it can while adding new features, and it is a game rather than a business productivity tool.

The game runs on Linux, macOS and Windows, and stable and nightly builds can be downloaded from the official website. It is also available on Steam, GOG.com and the Microsoft Store, and some operating systems provide it through their package managers. Add-on content and mods extend the game, multiplayer games are supported, and a community-maintained wiki hosts a gameplay manual and tips.

OpenTTD is written in C++ and licensed under version 2.0 of the GNU General Public License, although it includes some third-party software under other licences. The README also covers compiling from source, contributing, reporting bugs and translating the game.

Key features

Transport simulation based on Transport Tycoon Deluxe
Runs on Linux, macOS and Windows
Add-on content and mods
Multiplayer games
Stable and nightly builds

Good fit for

→Playing a transport management simulation
→Running multiplayer games with friends

Built with: C++
Tags: game; simulation; transport-tycoon; open-source; cpp; multiplayer; mods

OpenTTD: questions and answers

What is OpenTTD used for?: OpenTTD is an open-source transport simulation game based on Transport Tycoon Deluxe, available for Linux, macOS and Windows. It is a good fit for playing a transport management simulation and running multiplayer games with friends.
Is OpenTTD open source?: Yes. OpenTTD is open source under a custom licence. Its source code is on GitHub at OpenTTD/OpenTTD and is written mainly in C++.
Is OpenTTD free?: Yes. OpenTTD is open source, so the software itself is free to use under the terms of its own licence.
Can I self-host OpenTTD?: Yes. OpenTTD can be self-hosted on your own server or infrastructure.
What are some alternatives to OpenTTD?: Similar open-source tools in the Games & Emulation category include Sunshine, RPCS3 and Lichess. SaaS products in the same category include Apex Legends, Counter-Strike 2 and CurseForge.
Is OpenTTD actively maintained?: Yes. The most recent commit to OpenTTD was on 2 October 2026, and the latest release is 15.3, published on 4 April 2026. The project has 8.3k stars on GitHub.