Joshua Sawyer came up with the idea of using a slideshow instead of a cutscene, as it was much easier and videos in the engine were very expensive to make. This is proven by the fact that the Vault 13 canteen will activate during the ending if the 'sip time' is hit before the slideshow is over. In the new world of the Mojave Wasteland, fighting continued, blood was spilled, and many lived and died - just as they had in the Old World.