Fallout London is a total conversion mod for Fallout 4 that brings the post-apocalyptic series across the Atlantic for the first time. It’s ambitious, content-dense, and rivals the base game in file size.
How to play Fallout: London!
This is how many hours of fun you can expect from the Fallout mod.
Fallout London takes roughly 20-25 hours to beat if you quickly complete the mod's main missions. It can easily take longer, though; as The Ghoul put it in Amazon's Fallout TV adaptation, "Thou shalt get sidetracked by bullshit every goddamn time." That's just part of the Fallout experience, even in London.
If that's the case and you have a knack for completionism, this massive Fallout mod has about 90-100 hours of content for you.