- Install Steam Controller Templates: During installation, choose to install Steam Controller Templates for RetroDECK (this should be checked by default).
- Add RetroDECK to Steam Library: In Steam desktop, go to the `Games` tab, press `Add non-Steam game to My library`, and select RetroDECK. If that doesn't work, right-click on the RetroDECK desktop icon and press `Add to Steam`.
- **Optional** Get RetroDECK Steam Grid art and add it to your Steam library with BoilR, or add the art manually from [SteamgridDB](https://www.steamgriddb.com/search/grids?term=RetroDeck).
- Add BIOS and ROMs: Put the BIOS files inside `retrodeck/bios/` and ROMs & game files inside `retrodeck/roms/`.
- Switch back to `Game Mode`: Go to RetroDECK on the Steam Grid under `Library` -> `Non-Steam`.
- Configure Controller Layouts: Add the RetroDECK: `Steam Deck - Neptune Official Template` under `🎮 Controller Settings` -> `Controller Layouts` -> `Templates`. Choose either the SIMPLE radial layout or FULL radial layout.
- Read up on the [RetroDECK: Steam Deck - Hotkeys](../../wiki_rd_controls/hotkeys-steamdeck-neptune.md).
- Explore our other software recommendations for the Steam Deck: [Steam Deck: Software Recommendations](../../wiki_devices/steamdeck/steamdeck-software.md).
- Check various optional optimizations that can make some systems run even better: [Steam Deck: Optimizations](../../wiki_devices/steamdeck/steamdeck-optimize.md).
- Follow the first-time setup instructions and choose where RetroDECK should create the `retrodeck/` folder: `Internal Storage`, `SD Card` or `Custom Location`.
- Read the guide on: [How-to: Add RetroDECK to Steam](../../wiki_management/add-to-steam.md).
- Add BIOS and ROMs: Put the BIOS files inside `retrodeck/bios/` and ROMs & game files inside `retrodeck/roms/`. If you are unsure how to add ROMs and BIOS to RetroDECK [RetroDECK: Start Using](../../wiki_general/retrodeck-start.md).
- After this, you can see RetroDECK in Steam Deck's `Game Mode` after returning from `Desktop Mode`.
### Step 4: Configure the Steam Controller Profiles
This step is only needed if you installed the profiles. If you missed installing the layouts, you can always reinstall them from `RetroDECK Configurator` -> `Tools` -> `Install: RetroDECK Controller Layouts`.
- Explore our other software recommendations for the Steam Deck: [Steam Deck: Software Recommendations](../../wiki_devices/steamdeck/steamdeck-software.md).
- Check various optional optimizations that can make some systems run even better: [Steam Deck: Optimizations](../../wiki_devices/steamdeck/steamdeck-optimize.md).