Sims 4 - All The Fallen

If you manage to locate a legitimate (non-virus) version of the ATF overhaul, here is what you are installing. This mod fundamentally rewrites the game's simulation logic.

This is where the "Fallen" title gets its psychological weight. All The Fallen Sims 4

As of late 2025, the original ATF project is considered "abandoned but functional." The community has largely migrated to a spiritual successor called "Project Apocalypse: Remnant," which is being built on the newer Sims 4 codebase. Searches for "All The Fallen Sims 4" are slowly being redirected there. If you manage to locate a legitimate (non-virus)

If you find an old ATF file, it will likely work, but do not expect updates. Every major Sims 4 patch (Expansions like Lovestruck or Life & Death) will likely break the infection system permanently. As of late 2025, the original ATF project