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

As reported by Kotaku , 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 , are starting to pop up online. Most of F-Stop's assets came out in this August's Steam "teraleak," but the final pieces⁠—F-Stop's source code and mapsrc data⁠—were only just acquired by the Valve Cut Content Team Discord, which appears to have gone private amid all the newfound attention over F-Stop.