I've been working around it by creating 2x KSP folders, then using a junction point to point at the one I want to use. So, create two (or more) folders like so: blah\steamapps\common\Kerbal Space Program.Dev blah\steamapps\common\Kerbal Space Program.MainGame Then use mklink to create a junction point named "Kerbal Space Program" and point it at the appropriate folder: blah\steamapps\common> mklink /j "Kerbal Space Program" "Kerbal Space Program.<xyz>" If you're on Linux/Mac, you want a symbolic link: ln -s "Kerbal Space Program.<xyz>" "Kerbal Space Program"