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.
C# Lua Makefile PowerShell Shell NSIS Other
Latest commit bea2b5c Sep 26, 2016 @obrakmann obrakmann committed on GitHub Merge pull request #12102 from pchote/more-resupply-tweaks
Tweak aircraft resupply behaviour.
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OpenRA.Game Fix integer overflows in Wangle.ArcTan. Sep 25, 2016
OpenRA.GameMonitor Update to .NET 4.5 May 19, 2016
OpenRA.Mods.Cnc Remove hardcoded constants from ProductionAirdrop. Aug 24, 2016
OpenRA.Mods.Common Merge pull request #12102 from pchote/more-resupply-tweaks Sep 26, 2016
OpenRA.Mods.D2k Improve some exception types. Sep 11, 2016
OpenRA.Mods.RA Add a range check to Repair. Sep 21, 2016
OpenRA.Mods.TS Disallow building placement on bridges and fix radar color. Sep 18, 2016
OpenRA.Platforms.Default Improve out-of-memory logging with more details. Sep 16, 2016
OpenRA.Server Support loading mods from arbitrary locations. Aug 8, 2016
OpenRA.Test Add a new MiniYaml test regarding line numbers Jun 17, 2016
OpenRA.Utility Support loading mods from arbitrary locations. Aug 8, 2016
glsl Use the MATLAB Jet colormap for displaying depth data. Aug 28, 2016
lua Load assets using absolute paths. Fixes #6717. Oct 10, 2014
mods Drop the -0 suffix of all standup sequences Sep 26, 2016
packaging Add oramod file association for OSX. Aug 24, 2016
thirdparty Update SharpFont to version 4.0.1 Sep 1, 2016
.editorconfig added EditorConfig support Jul 7, 2013
.gitattributes Ensure LF line ending for .yaml files for hash consistency across pla… Mar 7, 2015
.gitignore Add Support directory to .gitignore file Jan 29, 2016
.kateproject Add a Kate project file. Jan 24, 2016
.travis.yml Update Mono to version 4.6.0 Sep 25, 2016
AUTHORS Add UnknownProgrammer to AUTHORS Sep 20, 2016 Update Jun 8, 2015
COPYING converted to GPLv3 Feb 16, 2010
ConvertFrom-Markdown.ps1 Replace the constantly breaking pandoc from Chocolatey Jul 16, 2016 Add OS X build instructions to Aug 19, 2016
Makefile Add oramod file association for Windows and Linux. Aug 24, 2016
OpenRA.Game.exe.config allow 3rd-party mod DLLs on .NET > 4.0 May 20, 2015
OpenRA.Test.nunit Add NUnit configuration with correct binpath Dec 29, 2015
OpenRA.Utility.exe.config redirect Microsoft.Build.Framework.dll on Mono 4 May 23, 2015
OpenRA.sln Port the Co-Op Allies04 map to Lua. Sep 4, 2016 Remove 404 images from the readme. Aug 6, 2016
Settings.StyleCop Enforce a line length limit. Mar 19, 2015
appveyor.yml Replace the constantly breaking pandoc from Chocolatey Jul 16, 2016
dupFinder.xslt scan for duplicates Jul 5, 2015
global mix database.dat Add nod_win1.aud and nod_map1.aud to mix database. Apr 1, 2016
launch-dedicated.cmd Disable singleplayer games by default on dedicated servers Jun 22, 2016 Disable singleplayer games by default on dedicated servers Jun 22, 2016 Move dedicated server code to OpenRA.Server.exe Mar 30, 2016
make.cmd Added a counterpart to the Makefile for Windows users Apr 7, 2014
make.ps1 Remove Platforms.Null from Windows style check Apr 13, 2016
utility.cmd Fix a stupid mistake in utility.cmd (td vs cnc) Jan 9, 2015


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

Please read the FAQ in our Wiki and report problems at

Join the Forums for discussion.


Distributed mods include a reimagining of

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

Check our Playing the Game Guide to win multiplayer matches.



  • Please read and Compiling on how to set up an OpenRA development environment.
  • See Hacking for an overview of the engine.
  • To get your patches merged, please adhere to the Contributing guidelines.


  • 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.



  • Sponsor a mirror server if you have some bandwidth to spare.
  • You can immediately set up a Dedicated Game Server.
  • Fund development by creating Bounties on specific tasks.


Copyright 2007-2016 The OpenRA Developers (see AUTHORS) 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.