A fully playable version of Portal prequel F-Stop leaked

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Terrence O'Brien is the Verge’s weekend editor. He’s covered the tech industry for over 18 years and knows a thing or two about synths.

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.

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...

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