3D Buzz "3D Buzz announces its new Video Training Module (VTM) series entitled Half-Life 2 Level Design! This new VTM will introduce you to Hammer, the powerful level editing tool within Half-Life 2's SDK! Lessons include full covering of Hammer's UI, creation and editing of geometry, creation and placement of entities, including props, weapons, lights, NPCs and more!" The Half-Life VTM is free to download.