Project Invincible supports the following command-line switches:
- --xboard: See XBoard.
- --settings-to-home-directory: Forces settings to be saved into the %APPDATA% or $XDG_CONFIG_HOME or $HOME/.config directory. By default, Project Invincible attempts to save settings into the current directory and falls back to %APPDATA% or $XDG_CONFIG_HOME or $HOME/.config if that fails. If you use the --settings-to-home-directory switch, the current directory won't even be tried.