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 the…
Valve notes that while these mods "must be free," their creators will be able to publish them on Steam. Up to this point ...
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The nostalgia-riddled Team Fortress 2 Classic mod is coming to Steam
Later this year, the Team Fortress 2 Classic mod will arrive on Steam to let you step back in time to the early days of Valve’s class-based shooter, when it was more game than hat collection ...
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Team Fortress 2 SDK Released By Valve
The SDK released by Valve gives mod makers the power to change, extend or rewrite Team Fortress 2. This means modders can do anything from small teaks, to "complete conversions." Modders do need ...