Worldcraft is one of the first notable level editors for *Quake*-based games. You might better know it as the Valve Hammer Editor, which is included with both the Half-Life SDK and Source SDK. After Worldcraft 1.2 was released, the then-nascent Valve Software bought the rights to the editor and included it as the official pack-in level editor to Half-Life. Worldcraft was later renamed Hammer and now comes standard with any Source games you might own.
The concepts and workflow established in Worldcraft are still used in modern versions of Hammer and editors similar to it (known as Worldcraft-like editors, such as J.A.C.K. or Sledge). The use of multiple 2D viewports for editing supplemented by a 3D viewport for previewing the level, separate tools for selecting, creating brushes, placing entities, and applying textures, a pop-up dialog for sorting and selecting textures, and more advanced tools such as the Cordon tool and the Expert Compile options dialog were all introduced in early versions of Worldcraft.
This page will serve as the hub for any versions of Worldcraft/Hammer we happen to come across. All of these versions are meant to work with Quake, Quake II, and GoldSrc games, and versions supported are listed with each individual version. These downloads don't require installation, though the 1.x versions expect to be run from
C:\Program Files\Worldcraft or they'll otherwise work improperly. Hammer 4.0 and later are required to map for Source games and are available with the games themselves, in their