Unknown Worlds: Natural Selection
- The official home for the multiplayer sci-fi Half-life mod, Natural Selection.
- http://www.unknownworlds.com/ns/
Rattrap's Natural Selection Site - With Natural Selection related downloads, wav files, and information on the Half Life Sound Selector (HLSS). - http://www.rattrap.org/
Evolution - Contains news, members and downloads. - http://mysite.mweb.co.za/residents/brendon.v/
AbsolutSwede - Natural selection customization and skins. Site contains models, sounds and projects. - http://absolutswede.zor.org
Natural Selection 2.0 (PC) - From Boomtown. Takes a closer look at the mod where aliens can eat people and where humans must prevent it. - http://boomtown.net/en_uk/articles/art.view.php?id=1454