• Sources
  • Note: Things in italics are listed are not confirmed or have different conflicting reports from different sources.

    Game Name In Game Server Browser Ports Default Server Game Port Default Query Port Default Query Port Algorithm
    Alien vs Predator 2 27887 - 27898 - 27888
    America's Army: Operations 1716 - 1727 - 1717 = Game Port + 1
    Battlefield 1942 21999 - 22010 - 23000 Uses first available 23000, 23001, etc.
    Battlefield Vietnam 21999 - 22010 - 23000 Uses first available 23000, 23001, etc.
    Breed - - 7649
    Call of Duty 28959 - 28970 - 28960
    Command & Conquer: Renegade 25299 - 25310 - 25300
    Contract J.A.C.K. - - 27888
    Daikatana - - 27992
    Deus Ex - - 7791
    Devastation 7777 - 7788 - 7778
    Doom III - - 27666
    Drakan: Order of the Flame - - 27046
    Far Cry - - 49001
    Freelancer - - 2302
    Ghost Recon - - 2348
    Giants: Citizen Kabuto - - 8911
    Global Operations - - 28672
    Gore - - 27778
    Half-Life 27014 - 27025 27015 27015 = Game Port
    Half-Life 2 - - 27015
    Halo 2301 - 2312 - 2302
    Hexen 2 - - 26900
    Homeworld 2 - - 6500
    Jedi Knight 2: Jedi Outcast 28069 - 28080 - 28070
    Jedi Knight 3 29069 - 29080 - 29070
    Kingpin: Life of Crime - - 31510
    Medal of Honor: Allied Assault 12299 - 12310 - 12300
    Medal of Honor: Allied Assault Breakthrough 12299 - 12310
    Medal of Honor: Allied Assault Spearhead 12299 - 12310
    Multi Theft Auto: Vice City - - 2126 =Game Port + 123
    Neverwinter Nights 5120 - 5131 - 5121
    No One Lives Forever - - 27888
    No One Lives Forever 2 - - 27890
    Operation Flashpoint 2234 - 2245 - 6073
    Operation Flashpoint Resistance 2302 - 2313
    Painkiller - - 3455
    Postal 2 - - 7778
    Project IGI2 Covert Strike 26000 - 26011 - 26001
    Quake II - - 27910
    Quake III Arena 27959 - 27970 - 27960 = Game Port
    Rainbow Six - - 2346
    Rainbow Six - Raven Shield (RavenShield) - 7777 2346 or 8777 = Game Port + 1000
    Rainbow Six - Rogue Spear - - 2346
    Return to Castle Wolfenstein 27959 - 27970 - 27960
    Rise of Nations - 6501
    Rune 7777 - 7788 - 7778
    Savage: The Battle For Newerth 11234 - 11245 - 11235
    Serious Sam - - 25601
    Serious Sam: The Second Encounter - - 25601
    Shogo: Armored Division - - 27888
    SIN - - 22450
    Solder of Fortune - - 28910
    Solder of Fortune 2: Double Helix 20099 - 20110 - 20100
    Star Trek Voyager: Elite Force 27959 - 27970 - 27960
    Star Trek Voyager: Elite Force 2 29252 - 29263 - 29253
    Tactical Operations - - 7778
    Team Factor - - 57778
    Tony Hawk's Pro Skater 3 - - 6500
    Tony Hawk's Pro Skater 4 - - 6500
    Tribes - - 28001
    Tribes 2 27999 - 28010 - 28001
    Tron 2.0 - - 27888
    Unreal - - 7778
    Unreal 2 XMP - - 7778
    Unreal Tournament 7777 - 7788 7777 7778 = Game Port + 1
    Unreal Tournament 2003 7777 - 7788 7777 7778 = Game Port + 1
    Unreal Tournament 2004 7777 - 7788 7777 7778 = Game Port + 1
    V8 Supercar Challenge - - 16700
    Vietcong - - 15425
    Wolfenstein: Enemy Territory 27959 - 27970

    Sources

    this page was grabbed from the 2004-12-31 cache of http://www.nerdclub.net/alp/cowiki/17.html which, at the time of writing, is offline. it'll do until I find something more conclusive.