The app will boost game quality and selection, but you'll need a GeForce Now subscription to make it worthwhile.

Take a look at the Steam Deck Full Support Announcement Trailer for GeForce Now, a streaming-based software that brings your game library at home to portable or other devices through the cloud. A new native GeForce Now App for Steam Deck will bring up to 4K resolution and 60 frames per second with HDR to Valve’s innovative handheld,