While this is the Wiki's version of the EC installed ending (I didn't know that the EMS was reduced for this version)-
Aftermath - Extended Cut
Note: This section details Mass Effect 3's ending with Extended Cut installed. Extended Cut changes the presentation of the ending by incorporating additional cutscenes and dialogue choices and lowering the EMS requirements for certain outcomes.
The Catalyst approaches Shepard and explains the purpose of the Reapers, their origins, and the ways in which Shepard can utilize the Crucible to stop them; Destruction, Control, or Synthesis. The availability of choices and the severity of the collateral damage on the galaxy will be determined entirely by the player's Effective Military Strength.
- If EMS is between 0-1749, only one option will be available depending on the player's choice at the end of Mass Effect 2: Control, if Shepard saved the Collector Base, and Destroy if Shepard did not. Both will result in massive physical damage to Earth, with Destroy killing almost everyone on Earth.
- If EMS is between 1750-2349, both Destroy or Control options are available, but either choice will cause some substantial damage to the galaxy.
- If EMS is between 2350-2649, the Control option will cause no physical damage but the Destroy option will still cause widespread damage.
- If EMS is 2650+ the Destroy and Control options will no longer cause any physical harm to the galaxy.
- If EMS is 2800+ the Synthesis ending becomes available.
- If EMS is 3100+ and the Destroy option is chosen, Shepard is seen barely alive, gasping for breath (if Anderson is shot by the Illusive Man, the player needs a higher EMS to see this short scene).
The
Destroy (red) option will result in the destruction of all synthetic life. The Crucible will fire a beam/pulse into the mass relay network, spreading the blast across the galaxy but severely damaging every relay and the Citadel in the process. Some time later, the galaxy eventually finishes the repairs to the relays and recovers from the destruction the Reapers had caused. Admiral Hackett narrates this ending.
- If EMS is substantially low, choosing Destroy will result in massive physical damage throughout the galaxy, as well as the annihilation of most life. Hackett's narrative is different in this ending; his outlook on the galaxy's future is far more bleak.
The
Control (blue) option results in Shepard sacrificing corporeality to command the Reaper fleet. The Reapers will then leave Earth at the will of the Commander. Instead of firing a beam, only a pulse will be released from the Citadel. The pulse spreads throughout the mass relay network, damaging them but leaving the Citadel intact. Shepard directs the Reapers to repair the mass relays and help rebuild the galaxy. Commander Shepard narrates this ending.
- Depending on the player's Paragon/Renegade score, Shepard's narrative changes in regards to their utilization of the Reapers.
In the
Synthesis (green) ending, Shepard adds their energy to the Crucible's, thus creating a new, synthesized DNA. The Catalyst explains that this is the best option, since synthesis is the pinnacle of evolution, and will render the Reapers obsolete. The Crucible emits a green light/beam, altering all denizens of the galaxy on the genetic level; the dividing lines between synthetic and organic life are blurred. The Reapers rebuild the damaged relays of their own accord, as well as share the collective knowledge of countless lost civilizations. EDI narrates this ending.
Alternatively, Shepard can
refuse to activate the Crucible. While speaking with the Catalyst, Shepard can reject deciding between the Destroy, Control, and Synthesis endings, insisting that a decision with such a massive impact on the galaxy and its people cannot be made, and that the war must end on Shepard's terms; or, Shepard can initially accept the Catalyst's options, but can then attempt to shoot the Catalyst instead. Both actions result in a Reaper victory and the continuation of the cycle of extinction. One of Liara's time capsules is then shown on an unknown world, and a recording of Liara explains that even though the people of her time failed in their struggle against the Reapers, those who find the capsule still have a chance to succeed.
Note: Choosing this ending will not unlock the Legend or Long Service Medal achievements.
In the Destroy, Control, and Synthesis endings, the Crucible's blast causes the Normandy to crash land on an unknown planet. The survival of the Normandy's crew will rely largely on EMS:
- If EMS is substantially low (below ~1750) and the Destroy ending is chosen, nobody exits the Normandy.
- If EMS is substantially low (below ~1750) and Control is chosen, Joker and two of the player's most-favored crew mates will exit a heavily damaged ship.
- If EMS is moderately high (above minimum, below maximum) and Destroy or Control are chosen, Joker and two of the player's most-favored crew mates will exit a heavily damaged ship.
- If EMS is 2800 or above, and Destroy or Control is chosen, Joker and two of the player's most-favored crew mates will exit a relatively undamaged ship.
- If Synthesis is chosen, Joker, EDI, and the player's most-favored crew member will exit the ship. Joker and EDI will embrace.
Various epilogue scenes will be shown, depicting the fates of noteworthy characters and races encountered throughout the journey. These scenes will depend on the choices made throughout the game, as well as the entire series. The surviving members of the Normandy's crew are then seen gathered near the memorial wall, honoring the memory of all those listed. The player's love interest (or Samantha if no love interest present, or if Liara was killed by Harbinger's beam) will place Commander Shepard's name plaque above Admiral Anderson's.
- If the Destroy option was chosen and the player has high EMS, the plaque is shown, but not placed on the wall and a scene showing Shepard breathing in a pile of rubble is shown.
Afterwards, depending on EMS rating, the Normandy will be shown on the unknown planet, either being repaired or taking off into space.
After the credits, a scene will be shown in which a Stargazer tells tales of "The Shepard" to a young child.