To facilitate modding of Fallout 3, Bethesda released the GECK editor. The game was released with official modding support and a complex game editor allowing for editing everything from item and character statistics, through maps, to creating entire campaigns.
Over the past two decades, both games have been reverse-engineered and accrued a number of notable modifications, including support for higher resolutions, engine upgrades, and of course, restoration of cut content. Although not designed to support modding, the game's engine loads loose files found in the game's directory, allowing for players to modify the game.
