"Fallout: Brotherhood of Steel 2" is the canceled sequel to "Brotherhood of Steel". The development of the game started before the completion of the original, and its development caused the cancellation of the "Van Buren" project. Like its predecessor, the game would have used the Dark Alliance Engine. It was targeted for a Christmas 2004 release date. It featured fourteen new weapons and ten new enemies. The game would have used a simplified reputation system based on previous entries; depending on whether the player was good or evil, the game would play out differently. Each of the four characters that were playable had a different fighting style, therefore every new play-through would have been a different experience. It had two player co-op action for players to experience the game with their friends. The Dark Alliance Engine would be fleshed out to refine player experience. A new stealth system would have been added to the game. This system would have allowed players to stalk enemies or stealthily assassinate them with a sniper rifle. For characters that could not use the sniper rifle, Interplay added a turret mode allowing those characters to use turrets.