How to Set Up Project M EX Remix on Steam Deck

The most ambitious mod for Super Smash Bros. Brawl, right in the palm of your hand.
How to Add Your Own Background Music and Sound Effects to your Steam Deck

Want to add your own sound effects or background music to your Deck? Here’s how.
How to Customize Steam Deck’s Theme, Background Music, and Sound Effects

It’s so easy that your grandmother could do it.
Steam Deck - Battery Saving Tips

Tired of the Deck’s poor battery life? There are ways to work around that.
Increase Power on AMD GPUs (and Fix Random Game Crashing)

Here’s how you can unlock more advanced power settings for your AMD GPU.
Force Native Linux Clients with Steam Play None

Though this is rare, there might be a game or two in your Steam library which – even though it may have a native Linux version – will force the use of Proton when you run it. For instance, when running CrossCode, your Steam Deck (or Linux desktop) will prefer Proton over the native version, because Steam apparently thinks Proton is better.
Maybe you don’t want to use Proton and play the game as is, natively.
Sonic Frontiers - Updated Steam Deck Modding Guide

UPDATE (12/29/2022): this guide has been updated to make sure HMM runs! I also have a video.
I guess many of the people who have tried adding mods to Sonic Frontiers on Deck have had trouble. And up until this point I’ve had no idea how to help troubleshoot the various issues they’ve encountered. Fortunately SolarNyan came to the rescue with an updated guide. I’ll explain their steps here with pictures and videos.
Play Sonic Adventure 2 in HD - Modding Guide

Sonic Adventure 2 – the cult classic. Fans have gotten together to make the game moddable. From an extended Chao World, to the ability to play as Super Sonic or Super Shadow, to revamped cutscenes, it’s amazing to see what the modding community has been able to accomplish to make a great game even greater.
But for today’s guide, we’ll be focusing on giving the game a modern HD look. Not only are the character models replaced with more modern-looking ones, but the mod also contains a sound redesign.