Call of Cthulhu: Shadow of the Comet is a computer game based around H. P. Lovecraft's Cthulhu Mythos. The game takes place in 1910, and concerns the visit of a young British photographer, John Parker, to the isolated New England town of Illsmouth (an alteration on Lovecraft's Innsmouth) to witness and photograph the passage of Halley's Comet...