Basics. The gamepad UI is enabled by default on Steam Deck, and can also be enabled on any platform by passing -gamepadui in the launch options. The UI layout files are placed in a gamepadui folder within a search path, though which search path they're in by default depends on the game: Half-Life 2: hl2/gamepadui/ (fonts), hl2/hl2_pak_dir.vpk
You can change the launch parameters in HL2.cmd and Portal.cmd to your desire, by default it is set to skip the startup video (Valve logo) ("-novid"), start in windowed mode ("-window"), the window will have no borders ("-noborder"), will have a resolution of your current screen resolution, up to 1920x1080 ("-w 1920 -h 1080") and be positionedYou can use "-novid" in for any Source game. To add it, right click on game and select properties. Then "Set Launch Options" and type in "-novid". This will skip the launch video. Share. Improve this answer. Follow. answered Nov 17, 2011 at 20:14. Dracs. pBNOmY.