The character would start the game as a prisoner; whether the character was wrongfully imprisoned or guilty was to be determined at character creation. The game would have started in a strange prison as it was attacked by an unnamed force. An explosion would knock the character unconscious, and the cell door would be open when he awakened. The player would then escape into the wasteland while being pursued by strange assailants. After leaving, the character would have the power to shape the destiny of the wasteland. His interactions with organizations such as the Brotherhood of Steel could bolster or destroy the organizations, influencing people associated with them, much as in the previous two Fallout games.
One of the more significant elements of the plot and backstory of Van Buren was to be an ongoing war between the Brotherhood of Steel and the New California Republic. The game's ultimate plotline was planned so that the events in the beginning of the game would have been part of a scheme by a rogue New California Republic scientist, Dr. Victor Presper, to seize control of a U.S. orbital nuclear weapons platform and use it to initiate a second nuclear holocaust, cleansing the world of all but his chosen few. In the end, the player would not be able to stop all of the missiles from launching, and his or her decisions on where the missiles would strike would ultimately have decided the future of the world.
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I would love to see Bethesda or whoever owns this stuff to release all the details etc related to this project. What would then be great is for a modder or someone else to develop this in to Bethesda's Fallout 3.
This original Fallout 3 game was sure to be far better than the current game we have and it is a shame Bethesda did not take this game further, it was afterall 80% completed.