Code Geass: Nightmare of Britannia

Code Geass: Nightmare of Britannia is a fan-fiction of Code Geass: Lelouch of the Rebellion that is set in a different universe. As oppose to Nightmare of Nunnally.

Though some of the basic plot points remain the same as manga spin-off, now Holy Britannia Empire have successfully invaded most of all nations including Europe, and only the minor, support and side characters are represent in the main story rather than main characters throughout the story. These elements are remains same as Nightmare of Nunnally, making elements from popular FPS Video Games known Crysis, Wolfenstein: New Order, Homefront: The Revolution, Gears of War and Killzone.