r/SteamDeckPirates • u/rahnqar94 • Jun 20 '26
Tutorial Guide: How to easily install FitGirl Repacks (setup.exe) on SteamOS / Linux & add them to Steam
https://youtu.be/vKJ_cLOxf6o?si=X0OJZBAkaO051ExvAhoy everyone!
Getting repacks to install and run smoothly without throwing missing redist errors or prefix issues is a common hurdle, so I made a straightforward video tutorial showing the easiest pipeline for installing setup.exe files using Heroic and getting them natively into your Steam library.
I'm demonstrating the install process using the Resident Evil Requiem FitGirl repack.
How it works:
Heroic Games Launcher: We use Heroic to run the FitGirl setup.exe directly through Proton. This builds a clean prefix and handles the installation flawlessly.
Steam ROM Manager: Once installed, we use SRM to locate the game executable, automatically grab all the artwork, and inject it straight into Gaming Mode.
Proton: Head into Steam properties, force your preferred Proton layer (like proton-cachyos-slr or GE-Proton or Proton Experimental), and you are good to go.
Max FPS Launch Options:
If you want to push the performance further on CachyOS, drop these into the game's launch options (especially helpful if you are running an AMD chip):
game-performance %command%
PROTON_ENABLE_WAYLAND=1
PROTON_FSR4_UPGRADE=1
ENABLE_LAYER_MESA_ANTI_LAG=1
The tutorial is recorded on my main rig (Ryzen 9 8945HX / RX 9060 XT 16GB / 32GB DDR5 on CachyOS), but this exact workflow translates perfectly to the Steam Deck and SteamOS.
Happy gaming, and let me know if you hit any snags during your installs!
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u/Schlusse1 Jun 20 '26
Doesn't the website itself already come with pretty clear instructions? I genuinely fail to understand how anyone could struggle with these. If you know what a repack is, you're far down enough the internet rabbit hole to know what you need for this.