The Steam Deck is a very handy gaming device. Not only can it play the latest PC games available on Steam, but you can also set it up to play PS5 games remotely. In this guide, I'll teach you how to install an app called Chiaki4Deck, which will make it very easy to play PS5 games on your Steam Deck.
How to Play PS5 on Steam Deck with Remote Play! – TUTORIAL – Your Own PS Portal
Since you’ll be visiting a website, entering some information, and executing commands, I recommend connecting a Bluetooth keyboard and mouse to your Steam Deck. This will make the process a lot easier. You’ll also want to make sure that your Steam Deck and PS5 console are both fully updated. This will prevent any updates from getting in the way of the actual installation process.
Now open the Discovery app on your Steam Deck. The icon for this app looks like a shopping bag.
Here find the search menu and type Chiaki. Now select install on the Chiaki4deck application.