7 Days A Skeptic is the second game in the Chzo Mythos series, but the last game chronologically. It was developed by Ben "Yahtzee" Croshaw using Adventure Game Studio and was released on July 22, 2004. Taking place nearly 400 years after 5 Days A Stranger, it chronicles the story of psychiatrist Jonathan Somerset and the other five crew members of the spaceship Mephistopheles as they face the same being that haunted the characters of 5 Days A Stranger.