What is ChimeraOS?

Is ChimeraOS based on Arch Linux?

Is ChimeraOS for me?

What is the Chimera app?

How can I access the Chimera app?

What emulated console platforms does the Chimera app support?

What third party stores does the Chimera app support?

Why doesn't ChimeraOS/Chimera support Origin/Battle.net/Ubisoft Connect?

How do I install non-Steam games?

Why don't games added through the Chimera app show up in Steam?

How can I access the desktop?

Can I dual boot ChimeraOS with another operating system?

Why can't I dual boot ChimeraOS with another OS on the same disk?

Can I use a secondary disk to store my games?

How can I add Steam library folders?

Why are some games not available to install?

How can I update my ChimeraOS system?

How can I install and use desktop applications such as Discord?






What is ChimeraOS?

ChimeraOS is a Linux-based PC operating system designed for a game console experience.

It runs Steam Big Picture Mode, allowing you to play most of your Steam library, but also allows you to install and play many non-Steam games through the built-in Chimera web app.


Is ChimeraOS based on Arch Linux?

Yes, ChimeraOS is based on Arch Linux. However, ChimeraOS has a unique install and update mechanism and does not make use of Arch Linux's native package manager pacman.

In fact, ChimeraOS does not deal with packages at all. Instead, the entire system is provided as a single downloadable image that is extracted to disk as a read-only volume upon each update.

This allows safe, automatic, zero downtime updates that require no human interaction.


Is ChimeraOS for me?

The main goal of ChimeraOS is to provide an out of the box console gaming experience that is usable by anyone, even those with no Linux experience.

ChimeraOS is for you if:


What is the Chimera app?

The Chimera web app allows you to install and manage non-Steam games, including your ROM collection and games from some third party stores.

It also functions as a handy remote control for your ChimeraOS box when used from your phone.


How can I access the Chimera app?

The Chimera app can be accessed from a web browser on another device by navigating to chimeraos.local or the IP address of your ChimeraOS machine.

You can obtain the IP address of your ChimeraOS machine by navigating to Settings->Network in the Steam Big Picture interface.


What emulated console platforms does the Chimera app support?


What third party stores does the Chimera app support?


Why doesn't ChimeraOS/Chimera support Origin/Battle.net/Ubisoft Connect?

These stores are not compatible with a game console experience and are thus not supported and likely never will be.

Only stores that allow running and installing games without having to use desktop client software can be used with ChimeraOS/Chimera.


How do I install non-Steam games?

Non-Steam games can be installed from the Library page of the Chimera app.


Why don't games added through the Chimera app show up in Steam?

Steam must be restarted to pick up the new games. You can do that through the Actions page in the Chimera app or by restarting the computer.


How can I access the desktop?

ChimeraOS is meant to replicate a game console experience and therefore does not have a desktop.


Can I dual boot ChimeraOS with another operating system?

Yes, but only if you have two separate disks. ChimeraOS requires its own disk.


Why can't I dual boot ChimeraOS with another OS on the same disk?

There are two reasons for this:

  1. to keep the installation process simple
  2. to allow for instant, full system updates without the possibility of interfering with another OS


Can I use a secondary disk to store my games?

Out of the box, ChimeraOS can currently only work with a single disk. However, if you are an advanced Linux user, it is possible to configure a multi-disk setup manually.


How can I add Steam library folders?

Steam Big Picture does not support adding Steam library folders. This feature is expected to become available with the Steam Deck/Gamepad UI which was announced to be replacing Steam Big Picture.


Why are some games not available to install?

ChimeraOS uses a compatibility layer called Steam Play/Proton to play Windows games. However, only games that have been tested and known to work are enabled with Steam Play out of the box. Other games must have Steam Play enabled manually before they can be installed.

You can enable Steam Play for a game as follows:

  1. Navigate to the game you want to enable and select it
  2. Select Manage Game->Set Steam Play Options...
  3. Check Force the use of a specific Steam Play compatibility tool
  4. From the drop-down that appears, select the version of Proton you would like to use

If you find a game that works with Steam Play after enabling it manually, please report it to the #compatibility-reports channel on the ChimeraOS Discord so it can be enabled for everyone.


How can I update my ChimeraOS system?

System updates are automatically downloaded in the background. A system notification will appear when an update has completed downloading. You can restart your system at any time to apply the update.


How can I install and use desktop applications such as Discord?

While you can technically install Discord and other similar applications, ChimeraOS does not support multi-tasking nor does it support the use of desktop software. It provides an environment optimized specifically for running games.