Steam now offers a playable demo for Dungeon Siege III, providing the chance to check out this action/RPG sequel developed by Obsidian Entertainment. Here is what they have to say about this:

The Dungeon Siege III Demo is now available via Steam. Experience a small taste of Dungeon Siege III in single-player and 2-person local co-op play modes. (co-op requires two controllers)

Click Here to download and start playing. Must have Steam installed.

Pre-Purchase your copy of Dungeon Siege III today and be ready to play when it launches this month.