Recreates Swarm Assault on OpenRA.
OpenSA is a community add-on for OpenRA. Cult RTS revived. Use the PlayBound launcher to drop the archive into the correct OpenRA content folder, then enable the mod from the game's mod or content menu. Mods are versioned separately from the base game — match the recommended engine or client release before joining multiplayer, and keep a clean backup of your settings if you experiment with several packs at once. PlayBound only lists projects that publish redistributable archives or clear external download pages. Always read the upstream README for credits, required assets, and known incompatibilities.
Install with the PlayBound Launcher
The launcher installs this into mods/ for OpenRA. If the base game is missing, it will install that first.
Install OpenRA first if you have not already — OpenSA is an add-on and needs the base game.
The quickest route is the PlayBound Launcher: open OpenRA, find OpenSA in its mods list and press Install. The launcher downloads the official release and places it in the right folder for you.
To install it by hand, download the latest release archive from github.com/Dzierzan/OpenSA/releases.
Extract the archive into the "mods" folder inside your OpenRA installation directory.
Start OpenRA and enable OpenSA from the in-game mods or add-ons menu. The download is roughly 280 MB.
Yes. OpenSA is released under Open Source / Community and costs nothing. Neither it nor OpenRA has any paid content.
OpenRA, which is itself free. OpenSA is an add-on and will not run standalone.
The PlayBound Launcher installs it in one click from OpenRA's mods list. You can also install it by hand — full steps are on this page.
Roughly 280 MB, on top of the base OpenRA installation.
Yes. The source is published at github.com/Dzierzan/OpenSA under Open Source / Community.