Big changes are coming to Big Picture mode.
Steam's new Big Picture mode

Valve is offering Steam desktop users a chance to check out the work-in-progress redesign of their Big Picture mode for Steam. This new look will be closer in design to what is currently available on the Steam Deck.

As this is something that isn't quite "finished" yet, Valve will be taking feedback on issues you may encounter when trying it out.

New features included in the redesign include a new Home screen, a new universal search, better navigation for controllers, an updated in-game overlay, a new system menu, and a new quick access menu. Additional details on these can be found below.

In order to opt-in to this Big Picture test, there are two steps you will need to take:

  1. Opt into the Steam Client beta
  2. Edit your Steam launch shortcut with the following launch parameter:
Valve says that this new controller-first interface "was designed for Steam Deck in handheld and docked mode, and is perfect for all the scenarios Big Picture mode currently handles."

  • New Home Screen, where you can continue playing recent games, and see what’s new with the games in your library.
  • New Universal Search, that searches across Library, Store, and your friends
  • New controller configurator, designed for ease-of-use of picking, adjusting, or creating custom controller configurations
  • Optimized Steam Store for controller navigation
  • Updated in-game overlay, with access to achievements and guides
    • Press Steam / Guide / PS button while in game
  • New system menu, for quick navigation to different parts of the interface
    • Access this with the Steam / Guide / PS button
  • New quick access menu, for access to notifications, friends list, quick settings, and more.
    • Access this with Steam / Guide / PS button + A