HappyDiggers TFC is a regular TerraFirmaCraft server. It only requires the client to have the TerraFirmaCraft mod installed.
The HappyDiggers TerraFirmaCraft server aims to be close to TFC while adding a few features to make life more comfortable. There is plot protection, grief prevention, everything is logged and we have several staff members who visit the server regularly to help with any issues. We have mini games on our Lobby server. See the TFC spawn area for more information.