{
  "id": 17651297,
  "title": "Valve's long-lost prototype Portal prequel appears online after nearly 20 years",
  "url": "https://urgent.news/2026/11/01/valves-long-lost-prototype-portal-prequel-appears-online-after-nearly",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-11-01T17:44:47.000Z",
  "source": {
    "name": "PC Gamer",
    "slug": "pc-gamer",
    "url": "https://www.pcgamer.com/games/fps/valves-long-lost-prototype-portal-prequel-appears-online-after-nearly-20-years/"
  },
  "original_language": "en",
  "account": "In a fascinating discovery nearly two decades after it was shelved, Valve's long-lost prototype game F-Stop has emerged online. According to Kotaku, F-Stop was reconstructed from leaked material and is now accessible through full playthroughs on platforms like YouTube. The game, which was part of Valve's Directed Design Experiments in the early 2000s, combined Team Fortress 2's cel-shaded art style with a vision of Aperture Science at its peak. Players control a camera that can capture and relocate objects to solve puzzles.\n\nWhile F-Stop received enthusiastic internal feedback from Valve, playtesting reportedly revealed lukewarm reactions, leading to its eventual shelving. However, elements from the game's worldbuilding would later appear in Portal 2 and Aperture Desk Job. F-Stop's unique camera mechanic, where players place objects in new locations to progress, was an innovative concept that would later influence games like Viewfinder. Despite its untapped potential, the reconstruction of F-Stop is a significant find, offering game enthusiasts a glimpse into Valve's creative process and the company's history.",
  "summary": "F-Stop was a result of a post-Orange Box, 2007 Valve game jam.",
  "key_points": [
    "Valve's long-lost prototype game F-Stop emerges online after 20 years.",
    "F-Stop combines Team Fortress 2's art style with Aperture Science's peak vision.",
    "Camera mechanic allows players to relocate objects to solve puzzles."
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 4,
    "also_reported_by": [
      {
        "outlet": "The Verge",
        "title": "A fully playable version of Portal prequel F-Stop leaked",
        "url": "https://urgent.news/2026/11/01/a-fully-playable-version-of-portal-prequel-f-stop-leaked",
        "published": "2026-11-01T16:19:21.000Z"
      },
      {
        "outlet": "Engadget",
        "title": "All the leaks for the Portal prequel F-Stop have been compiled into a playable game",
        "url": "https://urgent.news/2026/11/01/all-the-leaks-for-the-portal-prequel-f-stop-have-been-compiled-into-a",
        "published": "2026-11-01T17:54:34.000Z"
      },
      {
        "outlet": "Rock Paper Shotgun",
        "title": "What remains of canned Portal prequel white whale F-Stop is now fully playable thanks to modders and some big leaks",
        "url": "https://urgent.news/2026/11/01/what-remains-of-canned-portal-prequel-white-whale-f-stop-is-now-fully",
        "published": "2026-11-01T19:08:44.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}