There are several ways to add RetroDECK to Steam. If you have the Flatpak version of Steam installed, you need to do some extra steps for everything to work.
If you don't have you can just install it from Flathub. BoilR will add RetroDECK to Steam (Flatpak or standard versions) and also add the Steam Grid art.
On the Steam Deck do this in Desktop Mode-
1. Close Steam completely.
2. Open [BoilR](https://flathub.org/apps/io.github.philipk.boilr) (install it from Flathub if you don't have it).
3. Make sure RetroDECK is marked in the Import Games section.
4. Go to Settings, check Download Images, and enter your Authentication Key from SteamGridDB.
5. Choose if you want animated images or other types of images.
6. Go back to `Import Games` and press the `Import Button`.
7. Close BoilR and open Steam. The RetroDECK entry should now be there.
### Add Manually
1. Open Steam.
2. Go to the `Games` tab, press `Add non Steam game to My library`, and select RetroDECK from the list of installed applications.
3. Visit SteamGridDB and manually download the art.
4. Follow the guides on SteamGridDB to set up each art piece correctly.
### Add Manually from SteamOS
In SteamOS, you can just right-click on RetroDECK on the desktop, and you will have an option to add it to Steam.