OMEGA:
- In this massive DLC, you help Aria T'Loak (from Mass Effect 2) liberate Omega from Cerbereus.
- You come into opposition with one of Cerberus' top officers General Oleg Petrovsky.
- Aria, who isn't a playable character, becomes a temporary playable character in the DLC.
- Also as a temporary playable character is Nyreen Kandros. You will be dealing with both Cerberus operatives and Reapers.
- 5 new missions.

LEVIATHAN:
- Taking place during the events of Mass Effect 3, players will be thrust into the darkest corners of space where they will hunt a mysterious being
rumored to be powerful enough to destroy a Reaper. As they race against time, they will begin to unravel the secret of the Leviathan.
- Explore uncharted systems and new areas on the Citadel, interact with brand new characters,
unlock the AT-12 Raider shotgun and M-55 Argus Assault Rifle and discover more about the mysterious history of the Reapers.

10 new missions:
- Citadel: Dr. Bryson
- Citadel: Leviathan I
- Leviathan: Find Garneau
- Mahavid: Leviathan
- Citadel: Leviathan II
- Leviathan: Find Ann Bryson
- Namakli: Leviathan
- Citadel: Leviathan III
- Leviathan: Scan Locations
- Despoina: Leviathan

10 new locations:
- Dr. Bryson's Lab on the Citadel.
- The Caleston Rift cluster.
- The Crescent Nebula cluster.
- The Pylos Nebula cluster.
- The Indris system in the Kite's Nest cluster.
- The Lenal system in the Sigurd's Cradle cluster.
- The Mil system in the Sigurd's Cradle cluster.
- The Psi Tophet system in the Sigurd's Cradle cluster.
- The Kyzil system in The Shrike Abyssal cluster.
- The Thal system in The Shrike Abyssal cluster.

New weapons, mods and items:
- 2 new weapons AT-12 Raider, M-55 Argus
- 5 Weapon Mods, 11 War Assets , one Bonus Power, dominate
- one cabin item Bryson's Husk Head Experiment.

FROM ASHES:
- Mission on Eden Prime (a planet in Mass Effect 1), a new weapon (the Particle Beam), new outfit appearances for every squad member.
- One new Squadmate, new mission, new Assault Rifle, 6 Squadmate Outfits, 2 Achievements

FIREFIGHT PACK:
- This is a weapons pack including: 2 Assault Rifles, 2 SMGs, 2 Sniper Rifles, 1 Shotgun.

N7 COLLECTOR'S EDITION PACK:
- Online Pass, 1 SMG, 1 Shotgun, 1 Sniper Rifle, 1 Pistol, 4 Squadmate Outfits, 1 Casual Outfit.

N7 WARFARE GEAR:
- 2 Assault Rifles, 1 Armor Set.

M55 ARGUS, AT-12 RAIDER and M-90 INDRA:
- New weapons add-ons.
- M-55 Argus high-powered close-range Assault Rifle.
- AT-12 Raider Close quarter semi-automatic Shotgun.
- M-90 INDRA medium range heat seaking automatic Sniper Rifle.

GROUNDSIDE RESISTANCE PACK:
- 7 New weapons added for singleplayer mode.
- N7 Typhoon Assault Rifle, Piranha Shotgun, Venom Shotgun, Acolyte Pistol, Executioner Pistol, Kishock Harpoon Gun, Striker Assault Rifle.

ALTERNATE APPEARANCE 1 PACK:
- New clothings, costumes pack.

EXTENDED CUT:
- This DLC is giving player a choice with alternative ending. It can be found in games menu.

RETALIATION Multiplayer PACK:
- New "Hazard Gameplay" mechanic in existing 6 Maps. Survive the onslaught of Acid, Lightening, Meltdowns, Sandstorms, Swarms and Whiteouts!
- New Deadly Enemy Faction: The Collector Praetorian, Scion, Abomination, Trooper, and Captain.
- New Unlockable Weapons: The Collector Assault Rifle, Sub-Machine Gun, and Sniper Rifle. Unlock these weapons and new equipment upgrades.
- New MP classes: Drell, Batarians, Turians, Geth, Vorcha, Asari.
- New Class Kits to Unlock: A host of new characters, including the Turian Havoc Soldier, Turian Ghost Infiltrator.
- New Powerful Upgrades: three new ammo modifications and fortify your gear with five unique upgrades to defeat even the toughest foes.
- New Challenge Database (introduces MP assignments to accomplish).

EARTH Multiplayer PACK:
- Includes new mods, gear, and maps of Rio, Vancouver, and London.
- Six new human N7 classes: Destroyer Soldier, Paladin Sentinel, Demolisher Engineer, Slayer Vanguard, Shadow Infiltrator, and Fury Adept.

REBELLION Multiplayer PACK:
- DLC opens two new fronts against the Reapers: Firebase Jade’s Jungle reservoir and Firebase Goddess on Thessia.
- Reinforcement packs now include three new weapons: Reegar Carbine, Krysae Sniper Rifle, Cerberus Harrier, aswell as equipment and consumables.
- 6 new classes from species beaten by Reapers: Quarian Engineer and Infiltrator, Vorcha Soldier and Sentinel, Ex-Cerberus Phoenix Adept and Vanguard.

RESURGENCE Multiplayer PACK:
- Multiplayer map pack with new weapons and outifts.