For the original Xbox 360 versions of the trilogy (specifically in ISO/XEX formats often used for modded consoles), the downloadable content (DLC) offers expanded story arcs, new squadmates, and exclusive gear.
The following are the most notable features and content included in these DLC packs: Mass Effect 1 Mass Effect ISO & XEX DLC - Xbox 360 [Region ...
: Features a specialized space station where Shepard can compete in various combat challenges to test their skills and earn high-level equipment. Mass Effect 2 Krysae Sniper Rifle The Krysae Sniper Rifle is a sniper rifle in Mass Effect 3. Krysae Sniper Rifle Mass Effect 2: Lair of the Shadow Broker For the original Xbox 360 versions of the
: Adds a high-stakes mission to prevent Batarian extremists from crashing an asteroid into a human colony, introducing the Batarian race to the series for the first time. Krysae Sniper Rifle Mass Effect 2: Lair of