Technology1 min read

A fully playable version of Portal prequel F-Stop leaked

By · Via The Verge · Published by Everything Blog

In short

The recovered game relies on a mechanic where players use Polaroid-like photos to duplicate or place objects around the environment, resembling the indie title Viewfinder rather than traditional portal-hopping gameplay. It features a compact campaign that can be finished in under an hour. This brief scope is a result of the game being conceived during Valve's 2007 "Directed Design Experiments," a three-month initiative where staff formed five teams to test experimental concepts.

Key points

  • Players can now view the entire recovered campaign online nearly two decades after the pr…: Players can now view the entire recovered campaign online nearly two decades after the project was originally shelved.
  • The game can be completed in under an hour because it began as a short-term studio design…: The game can be completed in under an hour because it began as a short-term studio design experiment.
  • Valve repurposed certain dialogue lines and elements from the project into the final rele…: Valve repurposed certain dialogue lines and elements from the project into the final release of Portal 2.

Sources checked by our analysis pipeline: 1

Leakers have pieced together a playable version of the canceled Portal prequel F-Stop. Most of the assets came from the massive 12-terabyte leak that dropped this August. That didn’t include the game’s source code or map data, but those final pieces apparently hit the Valve Cut Content Discord this week, allowing a nearly complete version to be pieced together.

A fully playable version of Portal prequel F-Stop leaked

Nearly 20 years after it was canceled, the camera-based Portal prequel F-Stop is no longer lost media.

Nearly 20 years after it was canceled, the camera-based Portal prequel F-Stop is no longer lost media.

Some dialog and elements of F-Stop eventually found their way into Portal 2. But it differs dramatically from the mainline Portal games in that it’s built around a camera mechanic that lets you capture an item by taking its picture and place it elsewhere using the resulting Polaroid-like photos. It’s not unlike Viewfinder in that way.

The game is short, with videos showing off its full campaign all clocking in at under an hour. That’s not terribly surprising,…

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