Why would you make a co-op game for 3 players? The 4th port is right there. Why not call it Four Dirty Dwarves? Were they so married to the storyline of the three that could not bring themselves to alter the game or was the game unbalanced when you added a 4th. I guess it is true what my grandmother always said, “4 Dwarves is 1 Dwarf too many.” Amen, Nana.