---
title: "Polybius: The Killer Arcade Game That Got Erased from History"
description: "Uncover the truth behind Polybius, the legendary 1981 arcade game said to cause seizures, mind control, and disappearances in Portland, Oregon—before vanishing without a trace."
url: https://decodingtheunknown.pub/article/polybius-killer-arcade-game-erased-history.md
canonical: https://decodingtheunknown.pub/article/polybius-killer-arcade-game-erased-history
datePublished: 2026-07-01
dateModified: 2026-07-01
author:
  - name: Simon Whistler
    url: https://decodingtheunknown.pub/author/simon-whistler
publisher: Decoding the Unknown
image: "https://media.decodingtheunknown.pub/cdn-cgi/image/width=1600,height=900,fit=cover,quality=80,format=auto/articles/EGg4ut9STW4/hero.jpg"
type: Article
contentHash: 80f1e53a03a769d489740cbe0c208607ada8b4dc8838b764c2f525d640186937
tokens: 44
summaryUrl: https://decodingtheunknown.pub/article/polybius-killer-arcade-game-erased-history.md.summary.md
---

<!-- aeo:section start="lede" -->
Uncover the truth behind Polybius, the legendary 1981 arcade game said to cause seizures, mind control, and disappearances in Portland, Oregon—before vanishing without a trace.
<!-- aeo:section end="lede" -->