Bazzite
Bazzite is an immutable Linux distribution based on Fedora and designed with gaming in mind. It can run on desktop computers, the Steam Deck, and other handheld gaming devices.
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Nitrux
Nitrux is a desktop Linux distribution built from Debian, but with an immutable base system, the OpenRC init system, and without any traditional Debian package management tools. It uses the Calamares system installer and includes the Hyprland window manager, Hypr utilities, the greetd+QtGreet login manager, and the Waybar Wayland bar.