Am 10. April erscheint die erste Multiplayer-Erweiterung für Mass Effect 3 (ab 3,99€ bei kaufen) (PC und Xbox 360) und zwar kostenlos. Die PlayStation 3-Version erscheint einen Tag später - am 11. April.

Das "Resurgence Pack" beinhaltet zwei neue Karten (Firebase Condor und Firebase Hydra), drei weitere Waffen (Striker Assault Rifle, Kishock Harpoon Gun und Geth Plasma SMG), neue Consumables sowie sechs zusätzliche spielbare Charaktere: Asari Justicar Adept, Krogan Battlemaster Vanguard, Batarian Soldier, Batarian Sentinel, Geth Engineer und Geth Infiltrator.

CHARACTERS
Asari Justicar Adept
Asari are fierce, graceful warriors. They are incredibly powerful natural biotics. The asari excel at hit-and-run tactics that ruthlessly eliminate their opponents from the battlefield.

Krogan Battlemaster Vanguard
Krogan Vanguards are a brutish specimen. These fully mature krogan might be old and slow, but their biotic charge ability makes up for it. Their heavy shields and ability in close makes them a menace on the battlefield.

Geth Infiltrator
Geth Infiltrators converge quickly on a target while remaining undetected. Their unique perception systems give Geth Infiltrators an unsurpassed understanding of the battlefield.

Geth Engineer
Geth Engineers are elite support specialists. Their unique perception systems give Geth Engineers an unsurpassed understanding of the battlefield.

Batarian Soldier & Sentinel
Batarians are large brawlers that use nets and spiked weapons to capture targets ... or to bleed them dry on the battlefield. If an opponent gets too close, a Batarian bludgeons them with spiked armor and enforcement gauntlets.

MAPS
• Firebase Condor: A warzone outpost located on one of Palaven's moons, Firebase Condor represents a crucial asset in the defense of the Turian homeworld, providing the beleaguered turian fleet with a place to refuel and repair. Its loss could grant the Reapers unparalleled access to the Inner Council Theatre.

• Firebase Hydra: Firebase Hydra is located in an old abandoned Quarian colony which humans took over when they originally settled the world of Ontarom. It has since been converted into a massive dam facility which powers the communications hub located at Firebase Dagger and the kinetic barrier which protects it. Without this critical power source, Systems Alliance communications within the entire theatre would go dark.
 
WEAPONS
• Striker Assault Rifle: Krogan rifle with explosive rounds. Its rate of fire increases when the trigger is held.
• Kishock Harpoon Gun: Deadly one-shot batarian weapon. Causes bleed-out or disruption of target.
• Geth Plasma SMG: Fully-automatic geth submachine gun. Its rate of fire increases when the trigger is held.