Resource:GECK (program)

The G.E.C.K. (Garden of Eden Creation Kit) is the official editor for Fallout 3 and Fallout: New Vegas. This resource can be downloaded for free, allowing PC users to create and add their own content to the game or verify contents of game files.

Characteristics
The G.E.C.K. provides the community with tools that allow players to expand the game. 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. The editor requires a pre-existing installation of the associated game in order to function, as it requires the usage of several resources within the game.

Fallout 3
The first version 1.1 was made available on December 11, 2008. On May 26, 2009, an update to version 1.5 was released. It requires version 1.1 to be installed. These versions are available from the GECK wiki.

Fallout: New Vegas
The first version for Fallout: New Vegas was made available on October 19, 2010, concurrent with the game's U.S. release. It was later updated to the working version 1.4, which also is available on GECK wiki. As of May 20, 2013, the G.E.C.K. is available for download via Steam.