» Sat May 28, 2011 5:11 am
Considering that both Obsidian and Bethesda have experience with modding, that Obsidian themselves have used the GECK (granted, they modified it slightly) and that the game runs on the same version of the Gamebryo engine Fallout 3 ran on.. I'd say there's a 90% possibility that the answer to your question is a resounding yes.