OpenRA

Open-source real-time strategy game engine remaking classic Westwood RTS games

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Download OpenRA

Download OpenRAunknown · .dmg · 152.2 MB

macOS package (.dmg), architecture unlisted — verify before installing

Getting a "can't verify the developer" warning?

If you see a warning on first launch, go to System Settings > Privacy & Security and click "Open Anyway". Open source software usually isn't signed with an Apple developer certificate, which is normal.

Clicking "Download" takes you to a source confirmation page first; the download starts after confirmation.

About 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.

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Risk notice

This project is community-maintained and is not affiliated with EA (Electronic Arts); EA does not provide support or endorsement for this product. The macOS installer may not be signed by Apple, so you may need to allow it manually on first launch. Linux AppImages require you to manually set execute permissions. Please download from official or trusted sources to avoid tampered files.

Who it's for

Players who enjoy classic RTS games like Command & Conquer and Dune
Players who want to experience remastered classic campaigns for free
Players interested in RTS game balance adjustments or map creation
Developers who want to learn about game engines or C# game development
Open-source game enthusiasts who need cross-platform online multiplayer

Who it's not for

Users expecting official support or endorsement from EA
Those who expect the original graphics and sound to be completely identical
Players who are not comfortable with a community-driven update pace

Install guide

Windows

On 64-bit systems: Download OpenRA-release-20250330-x64.exe and run it, then follow the on-screen instructions to install.
On 32-bit systems: Download OpenRA-release-20250330-x86.exe.
Portable version: Download OpenRA-release-20250330-x64-winportable.zip (or the x86 version), extract it, and run OpenRA.exe directly.

macOS

Download OpenRA-release-20250330.dmg, open it, and drag OpenRA into the Applications folder.
If you see a warning that the app cannot be opened because it is from an unidentified developer, right-click the app icon and select "Open", or allow it in "System Preferences → Security & Privacy".

Linux

Download the AppImage for the game you want to play, e.g., OpenRA-Red-Alert-x86_64.AppImage (Red Alert), OpenRA-Tiberian-Dawn-x86_64.AppImage (Tiberian Dawn), OpenRA-Dune-2000-x86_64.AppImage (Dune 2000).
In a terminal, run chmod +x OpenRA-*.AppImage to give execute permission, then run ./OpenRA-*.AppImage.

Source

To build from source, download OpenRA-release-20250330-source.tar.bz2 and refer to INSTALL.md in the GitHub repository.

FAQ

Is OpenRA free software?

Yes. OpenRA is open source under the GPL-3.0 license, and all game content is free. You don't need to purchase the original games.

Which operating systems are supported?

According to official information, Windows, Linux, *BSD, and macOS are supported. This site provides installers for Windows and macOS, as well as Linux AppImages.

How do I update to a new version?

Regularly check the OpenRA website or the GitHub Releases page, download the new installer for your platform, and install it over the existing version. Linux users can simply replace the AppImage.

What should I do if the app won't open on macOS?

Because the macOS build may not be signed by Apple, right-click the app and select "Open" on first launch, or allow apps from unidentified sources in System Settings.

Do I need the original game files after installation?

No. OpenRA includes remastered game assets (such as units and maps), so you can play directly.