Originally available for the Microsoft Windows and Xbox 360 versions of Mass Effect 2 through limited promotional opportunities.Adds an assault rifle and an armor set.Originally included in the Mass Effect 2 Digital Deluxe Edition and Limited Collector's Edition that were released for Microsoft Windows and Xbox 360.Concerns the events of an imminent invasion of a highly advanced machine race of synthetic-organic starships.Concerns major events of the original Mass Effect.

Adds a digital interactive comic that allows the player to impact the story of the game.

Requires the Cerberus Network for the PlayStation 3 version of Mass Effect 2.

Concerns Liara T'Soni and her history with an information dealer known as the Shadow Broker.

Concerns the events of an experimental virtual intelligence that has gone rogue.

Concerns the recovery of data of great importance to Kasumi Goto.

Adds two missions, a squad member, a submachine gun, and other items.

Included in the PlayStation 3 version of Mass Effect 2.

Concerns planetary exploration aboard a hovering vehicle.

Concerns Zaeed Massani and his history with a mercenary organization called the Blue Suns.

Adds two missions, a squad member, a heavy weapon, and other items.

Concerns the exploration of the SSV Normandy crash site.

In 2021, all of the Mass Effect 2 downloadable content was remastered as part of the Mass Effect Legendary Edition. These were then made available on the PlayStation Network when the game was released for the PlayStation 3. Some downloadable content packs were originally only available for the Microsoft Windows and Xbox 360 versions of Mass Effect 2 through limited promotional opportunities.

However, users who buy the game used have to pay for the Cerberus Network separately if they want access to the bonus content. New purchases of the game are provided with a one-time use card granting access code that unlocks the game's Cerberus Network, an online downloadable content and news service that enables free bonus content for the game. The game's downloadable content was generally well received by critics and some packs were nominated for Best DLC at the Spike Video Game Awards. Notable packs include Kasumi – Stolen Memory, Overlord, Lair of the Shadow Broker, and Arrival. The downloadable content ranges from single in-game character outfits to entirely new plot-related missions. The game features a variety of downloadable content (DLC) packs that were released from January 2010 to May 2011. Mass Effect 2 is an action role-playing video game developed by BioWare and released for Microsoft Windows and Xbox 360 in 2010, and for PlayStation 3 in 2011. It can be accessed from the game's main menu. The Cerberus Network is an online downloadable content and news service for Mass Effect 2.

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