Mass Effect 3
Mass Effect 3

Key Story Choices & Consequences

Master key story choices and consequences in Mass Effect 3. Shape the Reaper War's outcome by making critical decisions that affect galactic alliances and endin.

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Key Story Choices & Consequences

Mass Effect 3 features critical story choices that significantly impact the narrative and its outcomes, shaping the galaxy's fate. These decisions influence character relationships, the availability of War Assets, and the ultimate resolution of the Reaper War. Understanding these choices is vital for players aiming to achieve specific endings or experiences.

The main story is divided into acts, with key missions driving the plot:

Act I

  • Prologue: Earth: The initial mission where the Reaper invasion begins.
  • Priority: Mars: Investigate Cerberus activity on Mars.
  • Priority: The Citadel I: Meet with the Council on the Citadel.
  • Priority: Palaven: Aid the Turians on Palaven.
  • Priority: Sur'Kesh: Secure a Salarian scientist on Sur'Kesh.
  • Attican Traverse: Krogan Team: Recruit a Krogan team.
  • Tuchanka: Turian Platoon: Assist a Turian platoon on Tuchanka.
  • Priority: Tuchanka: Deal with the Genophage cure.
  • Priority: The Citadel II: Address a Cerberus attack on the Citadel.

Act II

  • Priority: Perseus Veil: Investigate the Geth.
  • Priority: Geth Dreadnought: Infiltrate a Geth Dreadnought.
  • Rannoch: Admiral Koris: Rescue Admiral Koris.
  • Rannoch: Geth Fighter Squadrons: Destroy Geth fighter squadrons.
  • Priority: Rannoch: Infiltrate a Reaper base to deactivate the signal upgrading the Geth.
  • Priority: The Citadel III: Meet with the Asari Councilor for a clue regarding the Catalyst.
  • Priority: Thessia: Reach an Asari temple to retrieve vital information as Reapers devastate the planet.
  • Priority: Horizon: Investigate Cerberus's connection to a refugee center.

Act III

No side missions can be completed once Act III begins. Finish all other desired content before proceeding.

  • Priority: Cerberus Headquarters: Assault Cerberus's headquarters to recapture a Prothean VI that can identify the Catalyst.
  • Priority: Earth: Gather the galaxy's forces for the final battle to retake Earth and deploy the Crucible.

Beyond the main missions, key choices and consequences are detailed in the guide, including:

  • In-depth look at the major choices and consequences of each.
  • Full details on all possible Romances.