In Steam, go to Dungeon Siege I properties - Launch Options enter:
There is a way to get the multiplayer and the expansions working with Dungeon Siege 1 and 2! I haven't tried it out yet myself since I just bought the (un)complete pack earlier today, but I'm really hoping it will work. =Pįor anyone interested in playing Dungeon Siege I or II with a friend, or to be able to play the expansions for either games, check this out. Dungeon Siege III looks fun to me, but not nearly as good. I haven't played Dungeon Siege III yet, but I'll say that it is worth it for the first two games alone, especially if you can get the multiplayer working.