Team Fortress 2 maker Valve has handed over the game's full client and server code to fans, encouraging them to "change, extend or rewrite" TF2 in any non-commercial way possible. The code is now ...

It wasn't just Counter-Strike: Source and Day of Defeat: Source that received big updates today, as Valve also published a new update for Team Fortress 2 along with updating the Source SDK to include ...

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.

Here’s how it works. It took almost 20 years, but Team Fortress 2, the team-based FPS that changed a great many lives when it debuted in 2007, now has an SDK that Valve says will enable creators ...

Surprise! Valve's just released a massive update to the Source SDK, adding "all" the Team Fortress 2 client and server game code. More like this Valve Finally Fixes BLU Scout’s Pants ...

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 ...

Why it matters: Team Fortress 2 launched 17 years ago but still receives significant updates, and its player base is as healthy as ever. The latest patch fully unlocks the game's SDK, releasing ...

It took almost 20 years, but Team Fortress 2, the team-based FPS that changed a great many lives when it debuted in 2007, now has an SDK that Valve says will enable creators "to build completely ...

SRC Repair is a free open source tool that can be used for tuning and cleaning up Steam and Source engine games.

Unlike the Steam Workshop or local content mods, this SDK gives mod makers the ability to change, extend or rewrite TF2, making anything from small tweaks to complete conversions possible.