BioShock Infinite is a first-person shooter set in the floating city of Columbia in 1912. A mix of sci-fi and alternate history, it has player-controlled Booker DeWitt on a rescue mission to save Elizabeth, a woman with mysterious powers. The gameplay combines gunplay, psychokinetic powers, and a unique sky-line rail system for navigation and combat. It explores deep themes like American exceptionalism and quantum physics. Developed by Irrational Games, it's praised for its compelling narrative, rich world-building, and engaging mechanics, offering an experience that goes beyond typical FPS games.