Multiplayer
Online Multiplayer
Online multiplayer was released to the public as a beta on 10th of February 2014. At this point in time, the multiplayer, much like the rest of the game is still being worked on. This means that bugs and issues will usually come up during the course of play of the game. If you encounter issues while playing the multiplayer, you can try and see help on the steam forums or can visit the "Multiplayer Help" sections of the TIS Forums located here
Below are some helpful links that should help cover subjects like FAQ, server set ups etc.
Helpful Links
Buying & Running a Linux Server
These should help you with all the required information. We'll update this page as new information becomes available.
Splitscreen
It is currently in a rather buggy state, and is still be worked on to be fixed. This will be re-included into a future build.