How to turn on “windowed fullscreen” in TF2 and other Source games

source-engine

I'm sure Arda mentioned this in chat, and it was mentioned in the site too, but for the life of me I wasted 15 minutes trying to get back into TF2 after alt-tabbing out, then wasted 15 minutes trying to find the relevant piece of information again.

So I'll ask: how do you turn "fake fullscreen" (windowed mode maximized without border) in TF2, L4D, HL2 and the other Source games?

Best Answer

Use the following as your command line: (From the library right click on the game, then pick Properties → Set Launch Options.)

-sw -noborder

-sw means "Start Windowed." -noborder tells Windows to not draw borders (titlebar, window buttons) around the window.

You can also designate screen size (e.g. -w 640 -h 480), skip the intro video (-novideo), turn on low violence mode in L4D (-lv) and other options that may or not mean anything to you. A fuller list can be found here.

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