I’m a bit confused about this mod. If I have the Steam version of Fallout: New Vegas but I don’t have Fallout 3, how should I install TTW? Do I need to buy Fallout 3, or can I use a pirated version of Fallout 3 and merge it with my Steam version? Is there any mod that can be installed in one click without me needing to download anything from Fallout 3?