Playing Cosmic Supremacy without the Installer

This is the original Cosmic Supremacy client, patched to talk to a server that runs on your own machine, packaged with a launcher that starts it. There is no installer: unzip the archive wherever you like and run CosmicSupremacyLauncher.exe from the folder you unzipped it to.

File Name:CosmicSupremacy-Resurgence-v0.4.1.zip
Download Size:38.4 MB
Date Published:28 October 2026
SHA-256:c43b1900def4989ed4d3a760592280ba85b09473bd1b64c4dfbaa5ce14f7abac

The download is served from the project's GitHub release page, which also carries the release notes and every earlier build.

The launcher is code-signed. Windows may still warn you the first time you run it, because a new signature takes time to earn Windows' trust: click More info, then click Run anyway.

The SHA-256 above lets you check that the file you downloaded is the one that was published: in a command prompt, run certutil -hashfile CosmicSupremacy-Resurgence-v0.4.1.zip SHA256 and compare the result.

To uninstall, delete the folder.

System Requirements

Supported Operating Systems: Windows 10 / 11

Minimum Required Hardware: 1.5 GHz CPU, 512 MB memory, 200 MB free hard-disk space, DirectX 9 compliant graphics-card with at least 128 MB of graphics-memory.

Required Libraries: None to install. The client uses DirectX 9 and GdiPlus, and Windows 10 and 11 both ship with them, so neither redistributable is needed any more.
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You need to download and install the client-software, in order to enter any of the galaxies listed below

 
Galaxies

Coming soon.
No galaxies are running yet. This is where they will be listed once multiplayer is back.

 
Copyright © 2023 Cosmic Supremacy

Cosmic Supremacy and the original contents of this site are the work and property of their original creator. This is an unofficial preservation of a site that went offline, rebuilt from public web archives so the work is not lost. No ownership is claimed and nothing here is sold. If you are the original owner and would like this taken down or handed over, contact us in the Facebook group.
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