How to Install Rockstar Launcher on Steam Deck
It's a bit of a process but totally doable! First, boot up your Steam Deck in Desktop Mode. Once there, open up Discover (the app store for Linux) and install ‘ProtonUp-Qt’. This app lets you get the latest versions of Proton, which you'll need. Then, head over to Lutris' website, download their installer, and get Lutris up and running. Search for the Rockstar Games Launcher in Lutris and install it through that. After Lutris finishes its magic, you should see the Rockstar Launcher on your Steam Deck. Just remember, this isn't officially supported by Valve or Rockstar, so some tinkering might be needed to get games running smoothly!
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Honestly, don't bother. The Rockstar Launcher on the Steam Deck is more trouble than it's worth. Stick to games directly from Steam.
Just install it through Lutris. Desktop Mode -> Discover -> Lutris -> Find Rockstar Launcher. Done.
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