Fallout Online
Project V13
Interplay rebuilt its future around an online Fallout, but financing conditions and a rights lawsuit transferred the wasteland back to Bethesda before players could enter it.
Quick facts
- Existence state
- Never Born
- Peak stage
- working prototype
- Research confidence
- high
- Last verified
What it was
A cancelled massively multiplayer Fallout game developed by Interplay and Masthead Studios under the codename Project V13.
The MMO planned a persistent post-apocalyptic world with factions, settlements and storylines linked to earlier Fallout games.
Existence timeline
Interplay starts planning a post-apocalyptic MMO.
Bethesda's IP purchase leaves Interplay conditional MMO rights.
Masthead joins and development milestones are announced.
The publisher disputes whether licence conditions were met.
The project remains active while rights are contested.
Interplay relinquishes the Fallout MMO licence.
Why it ended
A 2012 settlement ended Interplay's licence and cancelled the Fallout version of the project.
Last confirmed trace
Court records, concept art, design documents and a later playable technology demo preserve portions of the MMO.
What it left behind
The dispute clarified control of one of gaming's major franchises and ended its original creator's final attempt to publish a Fallout game.
How we classified it
The proposed archive unit never reached ordinary public access in the form being documented.
The strongest verified milestone maps to working_prototype under Arrival Score V1.
Sources & verification
Last reviewed 2026-08-01. Sources are linked so readers can inspect the evidence directly.