Almost 100 modders spent 5 years making Fallout London, an RPG mod so expansive its creators call it "Fallout 4.5"

Fallout 4 mod Fallout London screenshot showing a ruinous post-apocalyptic Camden.

Fallout London, the expansive fanmade Fallout 4 mod that shows us The Big Smoke's version of the nuclear post-apocalypse, is out now after a very lengthy development. But it's ballooned so much after the last few years, that it might as well be thought of as "Fallout 4.5" instead of your everyday RPG fan projects.

What originally started out as a thought experiment five years ago to see what Fallout 4's base game would feel like if you were staring at red buses, or "what maybe the royal family would have looked like" in the 2100s, quickly expanded into something more DLC-sized, or even game-sized, project lead Dean Carter says in an interview with Metro. "The development scope has just got so much bigger. It's now basically what we like to consider Fallout 4.5."