BioShock Infinite: Burial at Sea — Episode 1 is the first expansion episode for BioShock Infinite. Events will unfold in an alternative Rapture — an underwater city from the two previous BioShock parts. The player in the role of the same Booker DeWit, still a detective, will have to meet with Elizabeth and help her in the search for a missing girl named Sally. By the way, girls are disappearing all over the place, so the investigation takes an unexpected turn for Booker. The main characters begin to suspect that the incidents are somehow connected with the Little Sisters program. The world of the game has become much more alive, since the actions take place before the uprising of the slicers, and each citizen goes about his completely peaceful affairs. As the game progresses, you will find numerous references to the original BioShock.
The add-on requires the original version of BioShock Infinite.