The best way to describe this is to say that: Fallout London is to Fallout 4, what New Vegas was to Fallout 3. It takes everything 4 does but expands on it. The factions are interesting, the world space is expansive and detailed. There's a lot more visual storytelling than 4, and a lot of the quests require you to pay attention to visual clues around you, rather than looking at the compass. The game is also far more difficulty due to the lack of ammo and requiring melee - especially early game.
