Caution

YOU MUST USE STEAM STABLE UNTIL FURTHER NOTICE

Steam has made some changes to the beta client which has messed up how themes work, resulting in Millennium being borked. As of now, you must use Steam stable (no beta) in Settings -> Interface -> Beta. Support is coming, and will be released when steam beta becomes public (date is unknown and in the hands of Steam)

Important

END-USER SUPPORT

If you face any issues installing and/or using Millennium, please refer to our wiki, or check current/closed issues here before asking us on discord!

Millennium for Steam®

Millennium is an open-source low-code modding framework to create, manage and use themes for the desktop Steam Client without any low-level internal interaction or overhead.

If you enjoy this tool, please consider starring the project ⭐

Installation

Automatic Installation (Recommended)

Install Millennium for Windows. See this page for a more detailed guide.

Manual Installation

For normal users, installing via the installers makes the most sense. However when wanting to either develop Millennium, or when the installers do not work, this option can be used. Check our wiki for a guide on how to do this.

Core Features

• CSS Overrides
  • Client Area CSS Overrides
  • Webkit CSS Overrides
• JavaScript Overrides
  • high-level interation with React in Client area.
  • Interation with any aspect of the Client with native JS.

RoadMap

• Linux Support
• Faster patching algorithm for Settings Modal
• Plugin Support
  • Backends written in python
  • Frontend written with React or native JS
  • IPC between usermode and JS vm.

Platform Support

Millennium currently only supports standard Windows NT builds. This includes ARM based processors and x86 based processors. Linux and Mac are NOT currently supported BUT support is currently in development for linux. For a more details see our wiki

Supported Platforms:

• Windows 10 and newer
• Windows (x86/x64/ARM) NT
• Linux (WIP, Learn more)