Fallout: London had been in development since 2019. It has a main map around the same size as
Fallout 4, with its five smaller hub areas combining to be roughly the same size as the
Far Harbor DLC. In a 2024 interview with
BBC News, Team FOLON's Dean Carter discussed the development of the mod and its origins. He stated that while it started small,
COVID-19 affected the world and, according to Carter, "we suddenly all found ourselves basically locked inside for two years with nothing to do so we decided let's make a game." Carter noted that the mod only had roughly 20 testers compared to 150 for Bethesda's
Fallout 4, and that such a small sample size could not have covered the wide range of computers and situations where bugs could occur. He stated that the team are hard at work on continuing to patch the game. Regarding support from Bethesda, Carter stated that there was "zero correspondence" from the company, but that Team FOLON did not expect any. The
Russo-Ukrainian War took its toll on the team, with multiple members needing to suddenly abandon their positions. Horses and bicycles were planned, but ultimately cut due to bugs and other issues. The mod features full voice acting provided primarily by volunteers, but also features the
Doctor Who actors
Colin Baker (the
Sixth Doctor) and
Sylvester McCoy (the
Seventh Doctor). The former speaker of the House of Commons
John Bercow also appears as a robotic Speaker of the House. The actor
Neil Newbon, who has provided the voice for
Astarion from ''
Baldur's Gate 3 and various voices in Resident Evil games, voices Barry the Boat. Anna Demetriou, known for Sophia from a A Plague Tale: Requiem'', also provides voices. Four hours of original music were created for the mod. The mod was initially scheduled to be released in 2023, and then scheduled to be released 23 April 2024. The game's release date was then pushed back a second time due to Bethesda's next-generation update to
Fallout 4. It was released on 25 July 2024. Team FOLON partnered with
GOG.com, who distributed the mod; it could not be hosted on typical mod sites due to its size. Within 24 hours it was reported that it had been downloaded over 500,000 times, making it the fastest redeemed title ever on the platform. A hotfix patch was released on 9 August 2024 which addressed the most pressing issues with the mod. The team continue work on a larger update. Ultimately the team opted to keep the mod on the pre-next-gen version of the game. For users of the
Steam version this required reverting the next-gen update, whilst GOG.com players had not yet received the update, and could install
Fallout: London without need to downgrade. On 28 May 2025 a
virtual reality version of
Fallout: London was released. On 30 September 2025 the first
expansion pack was released, named
Rabbit and Pork. The expansion requires players to create a new save, but includes bug fixes, new content, and a new way to launch the game. Along with the expansion's release, a
Kickstarter campaign was launched and funded for a collector's edition of the game. == Reception ==