Gears of War: E-Day is set in one city as it's both "a rich environment to tell a great story" and "the best gameplay playground for an intense cover-based shooter"

Marcus and Dom looking at the fallen city of Kalona during the Gears of War: E-Day trailer. .

Gears of War: E-Day's creative director, Matt Searcy, has confirmed that the story of the game will take place in a single city.

Rather than follow up on Gears 5, The Coalition surprised us with the news that the next Gears of War will instead be a prequel focusing on Emergence Day from the perspective of Marcus and Dom.