BioShock Infinite: Burial at Sea launch trailer

2K Games has released the launch trailer for BioShock Infinite DLC Burial at Sea.

The expansion takes players back to the underwater city of Rapture, the setting for the first two games in the BioShock franchise.

The story also takes place before the city was ruined, so for the first time players can explore Rapture in all its glory.

Watch the trailer below.

Burial at Sea will be available to download on Xbox 360, PlayStation 3 and PC from tomorrow.