BioShock Infinite: Burial at Sea is a two-part single-player expansion to the first-person shooter video game BioShock Infinite. It was developed by Irrational Games and published by 2K Games for PlayStation 3, OS X, Windows, Xbox 360, and Linux platforms. Episode One was released digitally on November 12, 2013, followed by Episode Two on March 25, 2014. A retail version was released as part of BioShock Infinite: The Complete Edition, and later included in BioShock: The Collection for PlayStation 4, Xbox One, and Nintendo Switch.

BioShock is a 2007 first-person shooter game developed by 2K Boston and 2K Australia, and published by 2K. The first game in the BioShock series, it was released for Microsoft Windows and Xbox 360 platforms in August 2007; a PlayStation 3 port by Irrational, 2K Marin, 2K Australia and Digital Extremes was released in October 2008. The game follows player character Jack, who discovers the underwater city of Rapture, built by business magnate Andrew Ryan to be an isolated utopia. The discovery of ADAM, a genetic material which grants superhuman powers, initiated the city's turbulent decline. Jack attempts to escape Rapture, fighting its mutated and mechanical denizens, while engaging with the few sane survivors left and learning of the city's past. The player can defeat foes in several ways by using weapons, utilizing plasmids that give unique powers, and by turning Rapture's defenses against them.