Running flyingshapes on a PC not conntected to the Internet works find using offline tokens (see Offline Installations ). It will however still try to reach flyingshapes servers for automatic updates, logging and analytics. To disable this you only have to do the following steps:

• Execute the default executable fs-launcher.exe with the console parameter -offlineto disable automatic updating at startup.
  As an alternative you can simply execute fs/flyingshapes.exe instead of the launcher.

• Set Settings.userOfflineMode_ in your user-settings file to True to disables analytics and logging. You can find this setting under %LOCALAPPDATA%\..\LocalLow\flyingshapes GmbH\flyingshapes\local_settings.cfg