Mac & PC, I believe it is also on the PS4. I have the Crimston Court DLC which I believe is worth it, the other DLC not so much.
It is available on Steam. I had to stop the stream as it still has bug when trying to stream in full screen. Going to see if I can fix that, or I will just go back to playing windowed. Should have tested before starting the stream.
i work all day but im looking for a new game and would be down to play. love these types of co-op games. ill look into it later today thanks