An event, and the title of a game

‘Emergence Day’ names the event when the Locust erupt from beneath Sera and begin their invasion. ‘Gears of War: E-Day’ is the game returning to that event. The distinction matters because older games refer back to Emergence Day even when their campaigns take place much later.[1][2]

Where E-Day fits in the timeline

Series history
From the Pendulum Wars to the Locust War[1][2][3][4]
  1. Before E-Day

    Pendulum Wars end

    The human war lasts 79 years. The peace before Emergence Day lasts six weeks.

  2. The opening days

    Gears of War: E-Day

    The invasion begins. Marcus and Dom’s campaign follows three days in Kalona.

  3. Early aftermath

    Gears of War: Judgment

    Baird and Kilo Squad fight in the immediate aftermath of the Locust invasion.

  4. 14 years after E-Day

    Gears of War

    The original campaign begins much further into the Locust War.

Only six weeks separate the end of the Pendulum Wars from Emergence Day. Judgment follows the invasion’s early aftermath, while the original Gears of War begins fourteen years into the Locust War.[2][4]

Why the earlier war matters

The long Pendulum Wars explain why Marcus and Dom are experienced soldiers before the Locust arrive. The short peace explains the shock of the invasion: a population beginning to imagine life after war is confronted by a threat from below. E-Day’s opening armistice setting makes that transition part of the story rather than distant exposition.[2][3]

Their shared military experience also carries a personal loss. Carlos Santiago’s death affects Marcus and Dom differently, and their friendship is still changing when the new war begins.[3]

Does E-Day retcon Judgment?

E-Day follows Marcus and Dom in Kalona; Judgment follows Baird and Kilo Squad in the early Locust War. They tell different squads’ stories around the same catastrophe.[3][4]

There is, however, a specific acknowledged timeline adaptation: the developers discuss moving the chainsaw-inspiration incident from the books into E-Day. The Lancer origin section explains how that incident becomes part of the new campaign.[5]

Which game should I play first?

Do I need the original trilogy to understand the premise?

No. E-Day starts with the human war ending, the Locust invading, and Marcus and Dom learning to depend on one another. Start here to follow that origin story, or play the original trilogy first to meet the characters as veterans of the Locust War.[1][3]

Sources & further reading

  1. Gears of War: E-Day official game pageXbox
  2. Gears of War: Ultimate Edition story primerXbox Wire · August 25, 2015
  3. Rebuilding BrotherhoodXbox Wire · June 7, 2026
  4. Gears of War: Judgment — Games with Gold overviewXbox Wire · March 26, 2015
  5. Gameplay reveal deep dive — Official Xbox PodcastXbox Wire · June 9, 2026