Mass Effect 3: Citadel

Mass Effect 3: Citadel is a downloadable content (DLC) pack developed by BioWare and published by Electronic Arts for the 2012 action role-playing video game Mass Effect 3. It was released for PlayStation 3, Windows, and Xbox 360 in March 2013. The pack follows Commander Shepard and the crew of the Normandy SR-2 starship on shore leave, where they must uncover the truth surrounding a conspiracy against Shepard.