Dungeon Siege 1

Dungeon Siege is a direct descendant of the grandfather of all of today's Hack'n'Slay "roleplaying" games, Diablo. In Dungeon Siege, you control one or more heroes in a gigantic 3D modeled fantasy world, slaying hundreds of monsters, casting spells and gathering experience points and valuable items.

The story is as simple as it is in the game's predecessors: you are a humble, yet unnamed farmer, whose lands are devastated by the evil Krug. Of course, you can't let this just happen to you, so you set for revenge...

Where Diablo (and Diablo II) had hand-drawn or pre-rendered graphics, Dungeon Siege takes the 3D approach. The entire world is rendered in real time, and there is no loading between levels - since there are no levels. It's more like the Ultima 7/8 games, where you have one gigantic world plane to roam.

As already expected, there are literally hundreds of monsters already awaiting our farmer, and of course there are many different weapons and items for him (or his party members) to acquire. This as well is a different approach - you can have a real party, all controlled by yourself (or your multiplayer friends, for that matter).

For players that want to mod games, this is a excellent game to mod. Tools can be found here

Message from Microsoft Games Support
Microsoft Game Studios has made the decision to retire player matchmaking services for Dungeon Siege. We are proud to have hosted these services and would like to personally thank you for being loyal to our games. You will still be able to play your games and create matches within your game; however, matches will no longer be hosted by Microsoft Game Studios.

Best regards,
Microsoft Games Support