Amphibian Mods describes procedures for installing and running single player mods for popular first person shooter games. The site is also a showcase for quality mods and map packs

Chain Studios is a Russian development studio, that creates mods for Half-Life

City 17 is a Russian review site for single player maps and mods.

The Combine Overwiki is a wiki encyclopedia dedicated to the Half-Life universe and its related subjects. Its main purpose is to treat the available content in an intelligent and analytical way, with emphasis on behind-the-scenes material when available.

Counter-Strike Brasil: Um dos maiores portais de Counter-Strike do Brasil, conteúdo, informação, interatividade, palavras que sempre andam junto com a competência e comprometimento em ajudar o próximo.

Having been around for nearly nine years, CS-Nation continues to be the leader in providing Counter-Strike related news to the community. Gamers from all over the world can learn about the latest updates to Counter-Strike 1.6, Counter-Strike: Source, Condition Zero, and all future sequels in the series.

Foxhole is the spiritual home of many Hangar16s. The site offers active and mature forums, coupled with in-depth articles and reviews about most aspect of FPS gaming.

FPS Banana is one of the largest and most popular game customization community driven websites around, uniting talented artist from around the world in constant submission of custom created content for the games of today.

Game Updates is a bittorrent reference site for legal game and mod files. You can find and download the latest patches and updates. The site is updated very regularly and users can also upload files. Each file has a basic description and users can comment on each file. There is also a forum.

Grinder74 covers single player maps & mods & other addons for the Half-Life series of games. It’s in Polish.

Half-Life BR is Brazil’s largest Half-Life portal, you’ll find everything you need to know fromto develop mods to the smallest details of each characters, events, etc.

Half-Life Creations provides a professional atmosphere for third party developers. Forums, downloads and even hosting for modifications are availble on this friendly site.