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Jeremy L edited this page Jun 15, 2022 · 1 revision

Launch Options

This document only lists Chaos Source-specific launch options, for a full list of launch options, please see the Valve Developer Wiki page.

Option Description
-mountmod Specifies the mod to launch the game with. Must be an absolute path
-nogamemount Do not mount any games/mods specified in the gameinfo mounts block or mounts.kv
-nocustommount Do not mount any folders specified in gameinfo which contain wildcards (* or ?), usually "custom" folders
-legacyui Launches the game with the old VGUI GameUI
-dev Developer mode
-dx11 Launch game with DirectX 11 shaderapi (On Linux, this will launch dx11 with dxvk)
-multirun/-allowmultiple Disables the creation of the source engine mutex, and allows the game to start even if one already exists

POSIX-specific options (Not available on Windows)

The following options are only available on Linux currently.

Option Description
-nomousegrab Forbids the game from grabbing the mouse
-exclusivefs Run game with non-desktop friendly fullscreen. This will resize your display resolution (Deprecated)
-noexclusivefs Run game with desktop friendly fullscreen, which is the default regardless (Deprecated)
-d9vk Launches the game with dx9 through dxvk

Hammer Options

Option Description
-winecompat Runs hammer with some workarounds for wine bugs/differences

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