is far expanded over that of the Construction Set, much like the functionality of the game engine. However, the functionality of the G.E.C.K.
has an interface similar to The Elder Scrolls Construction Set, which is useful to those who are familiar with it. 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 will allow players to expand the game. The editor requires a pre-existing installation of the associated game to function, as it requires usage of several resources.
(Garden of Eden Creation Kit), that can be downloaded for free, allows PC users to create and add their own content to the game. The official editor for Fallout 3 and Fallout: New Vegas, called the G.E.C.K.