Indebted to the wrong people, with his life on the line, veteran of the U.S. Cavalry and now hired gun, Booker De-Witt has only one opportunity to wipe his slate clean. He must rescue Elizabeth, a mysterious girl imprisoned since childhood and locked up in the flying city of Columbia. Forced to trust one another, Booker and Elizabeth form a powerful bond during their daring escape. Together, they learn to harness an expanding arsenal of weapons and abilities, as they fight on zeppelins in the clouds, along high-speed Sky-Lines, and down in the streets of Columbia, all while surviving the threats of the air-city and uncovering its dark secret.
BioShock Infinite is a first-person shooter with role-playing elements. As Booker, the player moves about the various structures of Columbia using a grappling hook, a series of railways connecting the buildings called the Skyline, and other transport means to search for Elizabeth. The player will gain weapons which can be used in numerous ways within the environment, including on the Skyline, to defeat enemies. Booker gains powers and abilities by using ‘vigors’ and wearing gear that are found through Columbia. Vigors grant activated powers such as telekinesis, electricity manipulation, or animal control, while selected gear are passive abilities that can improve the player's strength or damage resistance. With gear, the player has four available slots, and has to make decisions on which combination of offensive and defensive capabilities work for them. The key to success is to use vigor and weapons strategically – the player will be rewarded for considering all elements of the combat scenario and utilising the tools at Booker’s disposal in the best way possible!