The 2020 roadmap brought several critical systems that remain core to the experience today:
An endgame economy was established using Gold Bullion, earned via Treasury Notes from public events, to purchase high-level gear plans. PC Download & Installation Guide
For the first time, Appalachia was populated with living survivors. A full dialogue system—complete with S.P.E.C.I.A.L. checks similar to Fallout 3 —was added to both new and original NPCs.
You can download the game through several official storefronts: