Bazzite: An immutable Fedora-based OS optimized for gaming on any device, from desktops to laptops to the Steam Deck

Proprietary Nvidia drivers pre-installed.
Full hardware accelerated codec support for H264 decoding.
Full support for AMD's ROCM OpenCL/HIP run-times.
xpadneo driver for wireless Xbox One controllers.
Full support for DisplayLink.
Includes Valve's KDE themes from SteamOS.
LatencyFleX, vkBasalt, MangoHud, and OBS VkCapture installed and available by default
Support for Wallpaper Engine. (Only on KDE)
Distrobox preinstalled with automatic updates for created containers.
Automated duperemove services for reducing the disk space used by wine prefix contents.
System76-Scheduler preinstalled, providing automatic process priority tweaks to your focused application and keeping CPU time for background processes to a minimum.
Customized System76-Scheduler config with additional rules and CFS parameters from Linux-TKG.
Uses Google's BBR TCP congestion control by default.
Input Remapper preinstalled and enabled. (Available but default-disabled on the Deck variant)
Helpful first-start installer provides an easy way to install numerous applications and tweaks, including installing CoreCtrl and GreenWithEnvy.
Nix package manager optionally available.
Waydroid preinstalled for running Android apps. Future releases will offer to set this up for you. (Not available on Nvidia builds)
OpenRGB i2c-piix4 and i2c-nct6775 drivers for controlling RGB on certain motherboards.
GCAdapter_OC driver for overclocking Nintendo's Gamecube Controller Adapter to 1000hz polling.
Out of the box support for Wooting keyboards.