An internet connection is only required when activating World Creator for the first time. After activation, World Creator downloads a license file that you can use for offline usage. That license file will be valid for a couple of days. Once expired, World Creator requires an active internet conection again to validate the license.
For environments where an off-line workflow is required for a longer period of time, please contact support@bitethebytes.com. We will provide a specific license file to you. However, this option is available for companies only.