This ambitious Fallout 4 mod is now available. Here's how to play Fallout: London on Valve's Steam Deck handheld, thanks to our 1-click-installer.
Fallout London requires downgrading your game version before installing the mod. The people who run Overkill.wtf (who cover handheld news and have a weekly email newsletter) made an installation script to simplify the installation.
The downgrade wasn't difficult, it just took a bit of time, its slightly more complicated if like many others you own the game on Steam. I've been playing this week. A little buggy but so was FO4 at release.