can be expanded using the Fallout 3 Script Extender or New Vegas Script Extender (or FOSE and NVSE, respectively) much like OBSE for TES IV: Oblivion and SKSE for TES V: Skyrim however, these script extenders are not compatible with versions purchased via Direct2Drive, and having Games For Windows Live active will cause the game to crash as soon as you try to access Games For Windows Live. is far expanded over that of the Construction Set, much like the functionality of the game engine. has an interface similar to that of The Elder Scrolls Construction Set, which is useful to those who are familiar with it however, the functionality of the G.E.C.K. Users can create and edit any data for use with Fallout 3 or Fallout: New Vegas, from building landscapes, towns, and locations to writing dialogue, creating characters, weapons, creatures, and complex scripting. provides the community with tools that allow players to expand the game.
