The Steam Database has details on a patch for Fallout 3 that rolled out a few days ago that removes some variables with names like ShowCDKeyOnLaunch and LegacyKeyRegistryLocation that the posters on NeoGAF say shows the removal of Games for Windows LIVE functionality from Bethesda's action/RPG sequel. This is by no means a stretch, as various other games have recently removed support for Microsoft's DRM, including Ultra Street Fighter IV, BioShock 2, the Arkham series, and DiRT 3 amid rife speculation that the service will soon end altogether following the closure of the GFWL marketplace during the summer. This should theoretically be easy enough to check, but reinstalling Fallout 3 here has resulted in errors keeping the game from launching, but for what it's worth, we did not see any GFWL. Thanks The Escapist. Update: After getting the game to run (protip: Fallout 3 does not seem to appreciate dual-monitor setups), Fallout 3 ran without any GFWL prompts. Update 2: Upon closer examination, the game did install the Games for Windows LIVE client, and when this was uninstalled, Fallout 3 will no longer launch.