four-in-a-row -V (return code: 1)
Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
Cannot open display:
four-in-a-row --help (return code: 0)
Usage:
four-in-a-row [OPTION...]
Help Options:
-h, --help Show help options
--help-all Show all help options
--help-gtk Show GTK+ Options
Application Options:
--display=DISPLAY X display to use