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TheSteam Deckhas an excellent boot video, and the navigation themes look smooth and perform well. Aesthetically, it is as good, if not better, than several home consoles. However, the machine’s selling point is how customizable it is, and its users love to tailor the experience to suit their needs and tastes. Thankfully, the Steam Deck’s versatility extends beyond gameplay, and players can change their themes and layout.
Updated August 05, 2025 by Michael Llewellyn:Decky Loader is the program that runs CSS Loader to change the themes and layout of the Steam Deck. If you want something like the Switch it has the UI for you.

Unfortunately, the latest Steam Deck update broke the Decky Loader program in gaming mode. This guide is updated to show you the steps to fix the app and get your settings and plugins back.
Install Decky Loader
Before Steam Deck users can change their themes and gain access to customized videos, they must download the Deck Loader plugin. Decky Loader is the base program for tools likePowerToolsand CSS Loader. CSS Loader is a plugin that allows users to download themes for their Steam Deck. Use the following steps to install Decky Loader:
Install CSS Loader
With Decky installed onthe Steam Deck, it’s time to install CSS Loader. CSS Loader is the plugin for users to choose from many customized themes for their Steam Deck’s UI. Use the following steps to install CSS Loader:
Recommended Themes
There are several good themes to try using CSS Loader, and if Steam Deck users don’t like them, they can swap it for something else. Better still, many downloaded themes and tools can be mixed and matched. Here is a list of recommended themes:
How To Fix Decky Loader After The Steam Deck Update
The most recent update for the Steam Deck has eliminated the Decky Loader app from the Quick Access Menu. Fortunately, there is a method to restore it along with all your configurations. Additionally, this approach will ensure compatibility between the Steam Deck and Decky Loader for any subsequent updates. Proceed with the following steps to resolve the Decky Loader issue.
Always use a memorable sudo password to install future third-party apps from Desktop Mode. If you forget it, you’ll need toreset the Steam Deck to factory settingsto change it.

That’s everythingSteam Deck usersneed to download new themes for their Steam Deck. Some replicate the Nintendo Switch, or users can even improve the keyboard.

