Startup parameters

Startup parameters can be configured by creating a new shortcut and then adding the appropriate option in the target line.

Example

<program file> -popupwindow -adapter 2

For Steam version:

1. Choose the game shortcut in Library
2. Right click on the game
3. Properties -> General -> Set Launch Options...

Change default to run in 64bit (Windows):

1. Properties -> General -> Set Launch Options...
2. Change default executable to the 64bit version: "<path to KSP directory>\KSP_x64.exe" %command%

 ex. "C:\Program Files (x86)\Steam\steamapps\common\Kerbal Space Program\KSP_x64.exe" %command%

Parameters

Here is an incomplete list of available start up parameters:

• -popupwindow Enables full screen window mode. "Full Screen" option in graphics settings must be disabled for this to work. This option is also available through the KSP launcher settings.
• -single-instance Only allows one instance of KSP. When attempting to launch another instance of KSP, existing instance will become active window.
• -adapter Changes preferred monitor for full screen or full screen window. Example: "-adapter 2"
• -force-opengl Forces KSP to use openGL
• -force-d3d9 Forces KSP to use DirectX9
• -force-d3d11 Forces KSP to use DirectX11
• -nolog

External Links

• The Power of Unity's Command Lines arguments - KSP Forum
• Unity - Manual: Command line arguments