Fallout 4's impending next-gen update will almost certainly "break" many mods, according to a Fallout London modder, causing the "game-sized" project to be delayed indefinitely.

For most, the news of Fallout 4 ’s next-gen update is a well-timed boon, but for the team working on an ambitious mod, the news has completely blindsided them.

Fallout: London, like many Fallout 4 mods, relies on the Fallout 4 script extender.

The PC-specific update for Fallout 4 broke a number of crucial, long-running mods for the game, including Fallout 4 Script Extender (F4SE), which itself is used by many other mods for compatibility.