Fallout: London, the fan-made game-sized mod for Fallout 4, will be released today. The mod’s creators confirmed the release to Inverse – saying the date was now definite, “unless nuclear war happens”.

Developed by Team Folon, the mod has been over five years in the making and transports the post-apocalyptic game to England’s capital city, with a whole new story, environments, characters, factions, weapons, and gameplay elements.

Due to its size it won’t be available on popular mod hosting sites, so is instead available on GOG with a custom launcher.

Fallout London – Official Release Announcement