"Penumbra: Requiem" is a first-person survival horror game developed by Frictional Games. It serves as the sequel to "Penumbra: Overture" and continues the story of the protagonist, Philip, as he explores a mysterious underground complex. The game combines elements of puzzle-solving and exploration, with a focus on atmospheric storytelling and immersive gameplay. Players navigate through dark environments, encountering various challenges and enemies. The game emphasizes stealth and resource management, requiring players to think critically to survive. "Penumbra: Requiem" is known for its engaging narrative and innovative mechanics, contributing to the overall experience of the Penumbra series.