Dungeon Siege 2 (2005-03-22 preview/prototype build)
Released by CVLT OF OSIRIS - 2019-04-12
The installer for this build requires a product key. To avoid this, simply create a folder (such as C:\Program Files\Dungeon Siege 2 Preview) and copy the contents of the Files folder from the preview ISO into it, then run DungeonSiege2.exe from that folder.
The preview includes several premade savegames in the SinglePlayer folder in the ISO. Copy the entire SinglePlayer folder to C:\Users\YOUR_NAME\Documents\My Games\Dungeon Siege 2\Save\ to use them.
This build may not run correctly on Windows 8 or 10. The game menu may load, but the mouse may not be usable. It works correctly on Windows 7 and earlier.