Day of Defeat
Clans and Guilds, Reviews and Previews, Day of Defeat, Day of Defeat Game Community, Day of Defeat Info Site, DoD Network, Mako Scripts for DoD, Mardy Mouse, Stress' Downloads, Warwarrior
Natural Selection
AbsolutSwede, Evolution, Modified Selection, Natural Selection, Natural Selection 2.0 (PC), Natural Selection Mod Review, Rattrap's Natural Selection Site, Team KB, United Kingdom Natural Selection
Team Fortress Classic
Bots, Clans and Guilds, Leagues and Tournaments, Maps and Levels, Custom TFC Textures, Engineering Tips, Gamespot's Team Fortress Classic Game Guide, Half Life Source, Killjoy's Corner, Misanthropy, My Team Fortress Classic Page, Nick's Guide, PK TFC Add-on, Planet Half-Life TFC
Digital Splatter
A paintball modification. Development team, forum, visuals, and links.
Firearms Half-Life
News, forums, screenshots and beta download for a Half-Life modification with 27 new weapons.
Grand-Theft
Team based half-life mod, which tries to get the flair of the crime scene.
International Online Soccer
A mod in which players play soccer on opposite teams.
Power Forces
An upcoming modification where players may use vehicles to combine and form a single powerful unit.
Project-Timeless
Combines the atmosphere and mission depth of singleplayer maps with team strategy.
Science and Industry
A teamplay modification for Half-Life, in which players assume the role of Security Officer in one of two rival corporations striving for domination in the cutthroat world of chemical weapons research and development.
Scientist Hunt
Teams compete to kill the most scientists.
The Battle Grounds
A modification for Half-Life based on the American Revolutionary War.