Fallout: London (FOLON) is a significant mod for Fallout 4, described as a "DLC-sized" expansion that takes players to a post-apocalyptic London. It is the largest single-player Fallout release in over a decade. The development team, led by Dean "Prilladog" Carter, faced challenges during the five-year project, particularly regarding Bethesda's acceptance of the modification. Despite uncertainties, the team was invited to Bethesda's office, indicating a positive relationship with the original developers. Todd Howard from Bethesda expressed interest in the mod team's approach to recreating elements from Oblivion. The gaming community is eagerly anticipating the release of FOLON.