Retroarch is already on Steam as well as other emulators.

https://store.steampowered.com/app/1118310/RetroArch/

Even if you didn't want to use the Steam versions. Steam OS is essentially a customised Arch Linux and you can install stuff as you would on other Linux distros e.g. via packages and flathub. Basically it is a regular computer underneath. That is why I am very excited about this Steam box.

https://www.gamingonlinux.com/guides/view/how-to-install-ext...

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theoldgreybeard 5 hours ago | parent [-]

Isn't SteamOS immutable? Can you layer packages on it like you can with Fedora Silverblue?

	▲	entropicdrifter 3 hours ago \| parent \| next [-]
		You can add packages, but they can be wiped by the updates. Flatpaks work seamlessly and because of the Deck's popularity, most everything you would want is available in flatpak form
	▲	pico303 3 hours ago \| parent \| prev [-]
		On the Steam Deck you boot into desktop mode and it’s a standard Linux. Install what you want. I have Heroic Launcher on mine, running games from GOG and Epic alongside Steam games.