After playing Penumbra: Overture, everyone knew a sequel was on its way. The ending leaves scores of questions unanswered and perfectly prepares a follow-up. In 2008, Frictional Games released Penumbra: Black Plague, and in many ways, Black Plague does make the original feel like a mere overture. Frictional well heeded feedback following Overture's release and significantly tuned up their product in regards to pacing, controls, physics, and character interaction. All while continuing the fantastically creepy atmosphere and adding significant new elements to the story.