It is unknown why Sinclair tied the opening of the casino's gates to the Gala Event.”— Loading screen
The Sierra Madre Gala Event was a gathering of both celebrities and high society at the Sierra Madre Casino. The event took place on the night of the Great War, October 23, 2077. It was said to be an event of lights in the sky, while music would flood the villa streets. It would end with a grand finale of fireworks and the gates to the Sierra Madre opening, giving everyone who came through its doors a chance to begin again. But the gala event was cut short when the atomic bombs fell. The Sierra Madre had hermetically sealed for over 200 years and the holograms massacred the guests, seeing them as intruders.