Valve has opened up Team Fortress 2's full client and source code, encouraging players to 'change, extend, or rewrite' the game in any way they like. However, all mods must be released for free.
It's been a big week for Team Fortress 2's modding community (well, specifically a big eight days, but let's call it a week for convenience). Last Tuesday, Valve finally released The Team Fortress ...
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