• Games: Video Games: Computer Platforms: Windows  (80)
• Games: Video Games: Developers and Publishers: S: Sierra  (10)
• Games: Video Games: Developers and Publishers: V: Valve Software  (1)

• Planet Half-Life   - Resource includes files, forums, modifications, articles, and daily news.
  
  
• Half Life Source - Offers news, guides, screenshots and a forum.
• Half-Life Portal - Includes guides, walkthroughs, reviews, and a forum. Also offers a media area with videos and screenshots.
• Half-Life Prototype Developers - User submitted articles on the Half Life series. Includes tutorials on server administration and mod development, and technical articles on the game engine.

Help build the largest human-edited directory on the web. Submit a Site - Open Directory Project - Become an Editor