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 4c32e23 Mar 29, 2017 @atlimit8 atlimit8 committed on GitHub Merge pull request #12634 from GraionDilach/bullet-airburst
Implement airburst support to Bullet.
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OpenRA.Game Unify ingame message prefixes. #12923 Mar 18, 2017
OpenRA.GameMonitor Remove legacy restart behaviour. Feb 18, 2017
OpenRA.Mods.Cnc Remove unnecessary AttackTesla : AttackOmni subclass. Mar 10, 2017
OpenRA.Mods.Common Merge pull request #12634 from GraionDilach/bullet-airburst Mar 28, 2017
OpenRA.Mods.D2k Let the map importer account for duplicate tiles Mar 17, 2017
OpenRA.Platforms.Default Add support for moving ISounds after creation. Feb 3, 2017
OpenRA.Server Rework mod searching/enumeration. Feb 12, 2017
OpenRA.Test Make ConditionExpression ! return false for negative numbers. Feb 23, 2017
OpenRA.Utility Fix utility mod listing. Feb 17, 2017
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 Merge pull request #12997 from SoScared/mapEnsioFix Mar 28, 2017
packaging Merge pull request #12600 from pchote/externalmods Feb 12, 2017
thirdparty Cut down on the amount of output generated by dependency fetching scr… Feb 16, 2017
.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 mods/*/*.pdb to gitignore Sep 5, 2016
.kateproject Add a Kate project file. Jan 24, 2016
.travis.yml Update to Mono version 4.6.1 Oct 6, 2016
AUTHORS Move myself to previous developers. Mar 4, 2017 Update Oct 24, 2016
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 Fix makefile install rule. Mar 4, 2017
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 Add new lua files to OpenRA.sln. Mar 1, 2017 Update copyright notice year to 2017 Jan 1, 2017
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 Fix dedicated server crash with AllowPortForward. Nov 11, 2016 Fix dedicated server crash with AllowPortForward. Nov 11, 2016 Pass Engine.LaunchPath from linux launchers. Feb 11, 2017
make.cmd Added a counterpart to the Makefile for Windows users Apr 7, 2014
make.ps1 Merge Mods.RA into Mods.Cnc Feb 12, 2017
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 2007-2017 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.