The sw21.exe file you have requested: Modifications / Steels World II / Steels World II - The Bone Invasion V2.1 - 15.53mb is not available. Perhaps try browsing all files for the game Dungeon Siege and upload any files you want to share or are missing. This is the only information we could locate:
Steel's World: Bone Invasion, a popular modification for Dungeon Siege, has been updated to version v.2.1. Here are some of the new features: Rewritten story Original quests Game balance is better now supporting lvl 50 characters. Addition of Version 2.1 of the Steels World II modification for Dungeon Siege.