This guide details how to install EmuDeck and play Game Boy games on your Steam Deck, optimizing performance with Decky Loader and Power Tools. The Steam Deck, with its PC-like capabilities, offers unparalleled customization for retro gaming.

Before You Begin:

You'll need:

• A fully charged Steam Deck.
• An A2 microSD card for games and emulators.
• Legally obtained Game Boy ROMs.
• A Bluetooth or wired keyboard and mouse (recommended for easier navigation).

Enable Developer Mode:

1. Press the Steam button.
2. Navigate to System > Developer Mode and enable it.
3. Enable CEF Debugging in the Developer menu.
4. Power > Switch to Desktop Mode.

Install EmuDeck:

1. Connect your keyboard and mouse.
2. Download EmuDeck from the official website in Desktop Mode.
3. Choose Steam OS and select "Download for Free."
4. Select "Recommended Settings" then "Custom Install."
5. Choose your SD card as the Primary installation location.
6. Select desired emulators (RetroArch, Emulation Station, Steam ROM Manager recommended).
7. Enable Auto Save.
8. Complete the installation.

Quick Settings (EmuDeck):

1. Open EmuDeck and select Quick Settings.
2. Enable AutoSave, Controller Layout Match, Bezels, Nintendo Classic AR, and LCD Handhelds.

Adding Game Boy Games:

1. Use Dolphin File Manager to access your SD card (Primary > Emulation > ROMs > gb).
2. Ensure ROMs are correctly named (.gb extension).
3. Transfer your Game Boy ROMs to the gb folder.

Steam ROM Manager:

1. Open EmuDeck and select Steam ROM Manager.
2. Close the Steam client if prompted.
3. Disable Toggle Parsers.
4. Add your Game Boy games.
5. Save to Steam.

Playing Game Boy Games:

1. Press the Steam button.
2. Open Library > Collections.
3. Select your Game Boy collection and launch a game.

Customizing Game Colors (RetroArch):

(Not all games support this)

1. Launch a game.
2. Open the RetroArch menu (Select + Y).
3. Navigate to Core Options > GB Colorization.
4. Enable Auto or Off for color customization.

Using Emulation Station:

1. Press the Steam button.
2. Open Library > Collections > Emulators > Emulation Station.
3. Select Game Boy and launch your games. The RetroArch menu (Select + Y) also works here.

Install Decky Loader:

1. Switch to Desktop Mode.
2. Download Decky Loader from its GitHub page.
3. Run the installer and choose Recommended Install.
4. Restart your Steam Deck.

Install Power Tools Plugin:

1. Access Decky Loader's Quick Access Menu (QAM).
2. Open the Decky Store and install the Power Tools plugin.

Power Tools Settings:

1. Launch a Game Boy game.
2. Open Power Tools via QAM.
3. Turn off SMTs, set Threads to 4.
4. Open the Performance menu, enable Advanced View.
5. Enable Manual GPU Clock Control and set GPU Clock Frequency to 1200.
6. Enable Per Game Profile.

Restoring Decky Loader After a Steam Deck Update:

1. Switch to Desktop Mode.
2. Re-download Decky Loader from GitHub.
3. Run the installer (Execute only).
4. Enter your pseudo password (create one if needed).
5. Restart your Steam Deck.

Enjoy your Game Boy games on your Steam Deck!