Valve's long-lost prototype Portal prequel appears online after nearly 20 years

Valve's long-lost prototype Portal prequel appears online after nearly 20 years

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1 novembre 2026

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F-STOP (Aperture) MAP LEAK - FULL CAMPAIGN + EXTRA MAPS - YouTube

Watch On [https://youtu.be/mihs6K2ynCs]

As reported by Kotaku [https://kotaku.com/valves-cancelled-portal-prequel-f-stop-has-leaked-2000752082], a near-mythical canceled Valve game called F-Stop has been reconstructed from material contained in separate leaks. Direct access to the build seems a little shaky at the moment, but full playthroughs of the game, like this one by Meme Man? on YouTube [https://youtu.be/mihs6K2ynCs?si=xoZXp2hR3YUe4lGK], are starting to pop up online.

Most of F-Stop's assets came out in this August's Steam "teraleak," [https://www.pcgamer.com/games/the-steam-teraleak-extends-far-beyond-valve-games-including-prototypes-of-third-party-titles-like-mafia-2-and-grand-theft-auto-3-this-may-be-one-of-if-not-the-biggest-leaks-to-occur/] but the final pieces⁠—F-Stop's source code and mapsrc data⁠—were only just acquired by the Valve Cut Content Team [https://steamcommunity.com/groups/ValveCutContent] Discord, which appears to have gone private amid all the newfound attention over F-Stop. With the Discord currently invite-only, you gotta know a guy (or know a guy who knows a guy) to play it yourself.

The Half-Life Wiki [https://half-life.fando...

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