South Park is a first-person shooter video game based on the first few seasons of the popular TV series of the same name. The game is powered by the Turok 2 game engine and was released in 1998 by Acclaim for the PC, Nintendo 64 and PlayStation.
A comet is heading towards South Park, causing mutant turkeys, killer cows, "Visitors", giant clones, living toys, and robots to flock to the small Colorado town. With an arsenal of unusual weapons, and guided by Chef, Cartman, Kyle, Stan, and Kenny must defeat these evil forces and stop the comet from landing before it is too late.
Source: Wikipedia, "South Park (video game)", available under the CC-BY-SA License.