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A fully playable version of Portal prequel F-Stop leaked

Source: The VergeTerrence O’BrienNovember 1, 2026
Read the full story at The Verge

Community members have assembled a functioning version of F-Stop, Valve's canceled Portal spinoff, using assets from an August data leak combined with recently-shared source code and map data from the Valve Cut Content Discord. The game features a camera-based mechanic distinct from the main Portal series, with some elements eventually incorporated into Portal 2.

Key points

  • F-Stop is a canceled Portal prequel now playable via leaked assets
  • Game centers on a camera mechanic for capturing and repositioning objects
  • Some F-Stop elements were integrated into Portal 2

Summary and key points written by AI from the headline and a short excerpt, so they can be incomplete or wrong. The Verge did the reporting; read the original for the full story.

Read the full story at The Verge

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