The X-Files Resist or Serve was a 2004 PS2 that served as three “episode” companions to the television show. You play as either Fox Mulder or Dana Scully with appropriate likenesses during these episodes. The game made us of the Resident Evil engine and as heard in this video clip, features Mark Snow’s iconic theme song of the television show.
More info via Wikipedia: “Intended as three new episodes set during the show’s 7th season, the game follows FBI Special Agents Fox Mulder (voiced by David Duchovny) and Dana Scully (voiced by Gillian Anderson) as they travel to a small town in the Rocky Mountains to dig into the source of some strange and unexplained murders. Sightings of ghostly apparitions, zombies and hints of alien presence lead them on a chase for an “inhuman” killer. During the course of the story, Mulder and Scully follow leads to a remote location in Russia and then discover, and search, a mysterious half-buried alien space ship. Players can play as Mulder or Scully as they attempt to prevent alien colonization of Earth.
The game follows The X-Files series’ established canon, including the elements of alien colonization and the “black oil” (also known as Purity or the Black Cancer). Players also investigate various sets from the series, including the FBI office, Mulder’s apartment building, and the Russian camp where Mulder and Alex Krycek were subjected to the black oil. Many of the major and minor characters from the show make appearances, including Skinner, Kersh, The Lone Gunmen, Krycek, Marita Covarrubias and the Cigarette Smoking Man.”