The Sprunk Factory is a large, multi-story building located in the center of Montgomery. The factory stands in the middle of a fenced-in area lined with concrete on the floor. It is the tallest building in the town and can be easily spotted thanks to the rotating can of Sprunk found on its roof. Many players consider the factory to be abandoned, as no pedestrian activity occurs inside the fenced-in area, and no smoke emerges from the building's smokestack. The factory is inaccessible to the player and serves no role in any missions.
The Sprunk Factory has been linked to a few myths in the game.
The factory itself has been blamed for the Biowell, a waste ground site in Montgomery. This theory is supported by the fact that the factory is across the street from the alley containing the Biowell, meaning that any unlawful disposal could be done quickly. An advertisement for Sprunk suggests that the company uses dangerous chemicals like mercury and benzene in the production of the drink, possibly explaining the "Biowaste" signs around the well.
Another myth is that the Sprunk Factory is haunted. These reports revolve around strange sounds heard when near the inaccessible building. However, the idea that the Sprunk Factory was haunted emerged after the release of Grand Theft Auto IV, which features an abandoned Sprunk Factory that is widely believed to be haunted.