Fallout 3 places a player in the role of a Vault-dweller, who ventures from his secluded, underground survival Vault into a post-apocalyptic world of mutants, radiation, gangs and violence. The Broken Steel DLC lets you continue the adventure past the main quest by joining the ranks of the Brotherhood of Steel and ridding the Capital Wasteland of the Enclave once and for all. The new DLC is available, but PC users are
reporting that the download is broken gand iving a weird cryptographic error, which is
confirmed by Bethesda, as they are "looking into it."
Bethesda says a Games for Windows Live DRM issue is to blame, not the actual add-on, so Microsoft is working on it.