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Valve adds "all the Team Fortress 2 client and server game code" to its Source mod tools, letting modders "build completely new games based on TF2" and publish them on Steam

"We're already preparing for the porting efforts and a potential Steam release now that we've been legally enabled to pursue that," according to one mod dev When you purchase through links on our site ...
PC Gamer

Pre-Fortress 2, a mod that bridges the gap between Team Fortress Classic and TF2, is coming to Steam with a whole lotta grenades

Team Fortress 2 modders love nothing more than imagining alternate histories for Valve's long-running multiplayer shooter, and this year has seen several of these nostalgia-tinged conversions migrate ...
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Team Fortress 2 Classic mod delayed to January, and also isn't actually called Team Fortress 2 Classic anymore as Valve apparently asked for a name change

Team Fortress 2 Classic – a mod that sets out to offer a new TF2 experience but with the "original inspirations and tone" of Valve's FPS original – has been pushed back to January 2026, as the devs ...