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

Valve's Source SDK receives a monumental update, granting full access to Team Fortress 2's client and server code. This unprecedented move empowers modders to create entirely new games based on TF2's foundation, going far beyond the limitations of Steam Workshop or standard modding.

This open-source access allows for extensive modification, expansion, and even complete rewriting of Team Fortress 2 mechanics. While commercialization is prohibited – all creations must be free and non-commercial – the resulting mods and spin-off games can be published on the Steam Store, appearing as independent entries in the Steam game library.

Valve's decision acknowledges the significant community contributions to TF2, particularly regarding in-game items created via the Steam Workshop. To maintain this respect, Valve requests that modders refrain from creating content intended to profit from the community's existing work. Ideally, mods should remain compatible with players' existing TF2 inventories.

This update also encompasses a broader enhancement to Valve's back-catalog of multiplayer Source engine games. This includes the addition of 64-bit binary support, scalable HUD/UI, prediction fixes, and numerous other improvements across titles such as TF2, DoD:S, HL2:DM, CS:S, and HLDM:S.

This news follows the December release of the seventh and final installment of the Team Fortress 2 comic series, a seven-year-long project showcasing Valve's ongoing commitment to this enduring franchise. The comics have served as a rich source of lore and character development for dedicated fans.