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OpenRA

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github.com/OpenRA/OpenRA

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

command-and-conquercross-platformcsharpdotnetdune-2000enginegamegame-enginehacktoberfestopenrareal-time-strategyred-alert
GitHub stars
17,639
Forks
3,087
Open issues
1,603
License
GPL-3.0
Language
C#
Last push
today
24 Oct 2026
Created
4 Oct 2010

OpenRA

A Libre/Free Real Time Strategy game engine supporting early Westwood classics.

Please read the FAQ in our Wiki and report problems at https://github.com/OpenRA/OpenRA/issues.

Join the Forum for discussion.

Play

Distributed mods include a reimagining of

  • Command & Conquer: Red Alert
  • Command & Conquer: Tiberian Dawn
  • Dune 2000

EA has not endorsed and does not support this product.

Check our Playing the Game Guide to win multiplayer matches.

Contribute

Mapping

  • We offer a Mapping Tutorial as you can change gameplay drastically with custom rules.
  • For scripted mission have a look at the Lua API.
  • If you want to share your maps with the community, upload them at the OpenRA Resource Center.

Modding

Support

  • Sponsor a mirror server if you have some bandwidth to spare.
  • You can immediately set up a Dedicated Game Server.

License

Copyright (c) OpenRA Developers and Contributors This file is part of OpenRA, which is free software. It is made available to you under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. For more information, see COPYING.

Sponsors

Free code signing on Windows provided by SignPath.io, certificate by SignPath Foundation.