Quantum Theory is a third-person shooter for the Sony PS3, in which players engage in intense combat within a dark, post-apocalyptic world. It combines cover-based shooting mechanics with unique physics, as the environment dynamically changes during battles. Players control Syd and Filena, who must navigate through a living tower filled with grotesque enemies. The game emphasizes teamwork and strategy, with Filena’s AI complementing Syd's brute force. With a heavy emphasis on action and a narrative that delves into a twisted sci-fi realm, Quantum Theory offers a blend of gunplay and storytelling.