As spotted by gabefollower, Half-Life 2 now features a refreshed user interface that’s undoubtedly made for the Steam Deck. The text in the game’s main menu and in-game HUD is larger, with the latter featuring bigger selectable areas to accommodate touchscreens and the portable PC’s touchscreen.

Right-click Half-Life 2’s icon on Steam and select “properties” Go to the betas tab Select “beta updates” from the dropdown menu In the general tab, enter “-gamepadui” into the launch options field Bang, you’re done!