Team Fortress 2 Modders Rejoice as Valve Releases Full Client and Server Game Code

Surprise! Valve has unleashed a massive update to the Source SDK, generously including the complete Team Fortress 2 client and server game code. This opens the door for players to create entirely new games based on its source code. Unlike Steam Workshop or typical local mods, this update grants modders unprecedented freedom to modify, expand, and even completely rewrite Team Fortress 2.

While commercialization is off the table – meaning any derived mods or games must be free and non-commercial – creations can be published on the Steam Store, appearing as distinct games within Steam's game library.

In a blog post, Valve explained this decision, acknowledging the significant community investment in TF2 inventories and Steam Workshop contributions. The vast majority of in-game items are a testament to the community's hard work. To honor this, Valve requests that TF2 mod creators respect this connection and refrain from creating mods designed to profit from the efforts of Workshop contributors. Ideally, many mods will continue to allow players access to their TF2 inventories, where appropriate.

This update also includes a significant overhaul of Valve's multiplayer Source engine back catalog, introducing 64-bit binary support, scalable HUD/UI, prediction fixes, and numerous other improvements. These enhancements benefit not only TF2 but also DoD:S, HL2:DM, CS:S, and HLDM:S.

Last December, after a seven-year hiatus, the Team Fortress 2 comic concluded with its seventh and final update. These comics have served as a rich source of information for fans, enriching their understanding of beloved characters and storylines, and highlighting Valve's ongoing commitment to one of its longest-running franchises.