Fallout: Brotherhood of Steel 2 (lost build of unfinished PlayStation 2 action role-playing game; 2000s)
From The Lost Media Wiki
Fallout: Brotherhood Of Steel 2 was going to be the sequel to the 2004 Interplay game, Fallout: Brotherhood Of Steel, but was canceled in 2004 when Interplay laid off or fired over 75% of their staff. The game was near completion when it was canceled, similar to what happened with Van Buren a year earlier.
In March 2009, the game's design documents were leaked onto the internet, revealing some details on what the game was going to be about.[1]
The gameplay was going to be the same as the original Brotherhood Of Steel, (a linear action game), and was to have run on the same engine.