This article has a talk page!This is a sub-page of Development:Half-Life (Windows).
The official Half-Life SDK that Valve shipped out initially on 7 April 1999. With this release, Valve included modeling, mapping and sprite-making tools, as well as several of the model sources for various NPCs, props and weapons.
Source CodeA publicly released version of the game's source code, intended for modding purposes.
Hammer FilesHelpful resources for the hopeful mapper.
Map FilesSome raw files for maps c1a0 and c1a0d as well as a map for demonstrating the use of env_beam entity.
Monster ModelsThe cut creatures you never got to fight.
Player ModelsSource files for some of the deathmatch player models.
Weapon ModelsThe instruments with which Gordon Freeman saved humanity.