Modders plan to push Fallout 4's Creation Kit to its limits with a massive new Fallout 3-sized mod set in Seattle.
Introducing Fallout Cascadia, an ambitious new modding project that will bring the Fallout universe to the Pacific Northwest for PC players--and eventually console users--to enjoy. Cascadia is being built by a team of 18 volunteers using Fallout 4's official Creation Kit, and will be completely separate from Fallout 4. The Seattle-based mod is expected to be almost as big as Fallout 3 and much bigger than Far Harbor, with all new quests, storylines, and authentic locations based in the region.
Cascadia takes place several decades after Fallout 3/New Vegas/Fallout 4, and Seattle will be the main hub on the game--the same way Boston is Fallout 4's main hub. "Many locations of the game focus around the city proper, including certain fair grounds, public markets, and other famous locations. The game will also include other locations to the west and south including Mercer Island, Redmond, Bellevue, forested areas and airports. The project make an effort to make the world a believable and alive one."