Hammer

Hammer is a level-creation tool for the GoldSRC and Source Engines and part of the Source SDK. It grew out of an earlier level editing program known as Worldcraft, one of a set of rival tools used to create levels for Quake / Quake 2 and Hexen.

Text under this line is by Irandael 08:42, 10 July 2007 (+1GMT)

Valve Hammer editor (VHE) is tool included in Source SDK. Valve used this editor to create whole Half-Life 2. After relasing Half-Life 2 valve added Source SDK to it so everyone who own Half-Life 2 can download Source SDK with hammer in it.

For creating maps you can use these primitives:

Block
Cylinder
Sphere
Spike
Wedge


There are some complex one too:

Arch
Torus