Penumbra: Requiem is an expansion pack to the game Penumbra: Black Plague by Frictional Games.

 

Like the previous games, Requiem is an exploration-based adventure game that takes place from a first-person perspective and final installment of the main series. Unlike Black Plague and Penumbra: Overture however, the focus is almost exclusively on puzzle solving. No enemies are encountered meaning the player can only be injured by environmental hazards.