Natural Selection
3431 Members - 0 Chatting, 137 In-Game, 704 Online

Left 4 Dead
6018 Members - 12 Chatting, 353 In-Game, 1450 Online

TeamFortress2
23809 Members - 0 Chatting, 783 In-Game, 4401 Online

FacepunchStudios
12797 Members - 3 Chatting, 822 In-Game, 3142 Online

KiFFERSTUEBCHEN
223870 Members - 12 Chatting, 15506 In-Game, 55989 Online

Unknown Worlds
208 Members - 0 Chatting, 5 In-Game, 59 Online

Australian Gamers
3845 Members - 0 Chatting, 89 In-Game, 516 Online

Build Team
116 Members - 0 Chatting, 12 In-Game, 29 Online

Doorman is God
63087 Members - 0 Chatting, 3019 In-Game, 11375 Online

House of Mirrors
87 Members - 0 Chatting, 11 In-Game, 25 Online

CZ;CS殺手terry*{TW}*
19946 Members - 0 Chatting, 1893 In-Game, 5254 Online

The Teamwork Movement
145693 Members - 7 Chatting, 7534 In-Game, 28445 Online

Bob Marley Fan club
637 Members - 0 Chatting, 32 In-Game, 119 Online

Suicide Club
52 Members - 0 Chatting, 6 In-Game, 12 Online

Team Fortress 2
34431 Members - 0 Chatting, 1656 In-Game, 7097 Online

Newbees
397 Members - 0 Chatting, 20 In-Game, 81 Online

Dodging bullets
13 Members - 0 Chatting, 0 In-Game, 3 Online

The Organisers
5095 Members - 0 Chatting, 349 In-Game, 1196 Online

Guns n Headcrabs
32 Members - 0 Chatting, 2 In-Game, 3 Online

GangsterKillers
339 Members - 0 Chatting, 19 In-Game, 71 Online

;)
11 Members - 0 Chatting, 1 In-Game, 4 Online

AFU
64 Members - 0 Chatting, 2 In-Game, 7 Online

Clan FREINDLY Chat
96 Members - 0 Chatting, 1 In-Game, 17 Online

NIGHTMARES ELITE FEW!!
7 Members - 0 Chatting, 1 In-Game, 2 Online

Death Zone
449 Members - 0 Chatting, 43 In-Game, 131 Online

CRAZY MURDER
12 Members - 0 Chatting, 0 In-Game, 0 Online

KIDFITERS
7 Members - 0 Chatting, 0 In-Game, 1 Online

Half-Life computer geeks
17 Members - 0 Chatting, 2 In-Game, 5 Online

AA army
24 Members - 0 Chatting, 0 In-Game, 5 Online

HALF LIFE FAN
94 Members - 0 Chatting, 9 In-Game, 28 Online

{NOOBKILLER}&KRISTY}
6 Members - 0 Chatting, 0 In-Game, 0 Online

Free Tibet
36044 Members - 0 Chatting, 4282 In-Game, 12031 Online

bounty hunters
45 Members - 0 Chatting, 5 In-Game, 13 Online

Headbine
11 Members - 0 Chatting, 0 In-Game, 3 Online

Supreme Dominance
3681 Members - 0 Chatting, 356 In-Game, 1119 Online

Mahoromatic - Automatic Maiden
67 Members - 0 Chatting, 6 In-Game, 20 Online

CS University
114 Members - 0 Chatting, 5 In-Game, 29 Online

Rex
152 Members - 0 Chatting, 10 In-Game, 34 Online

Game Punks
15 Members - 0 Chatting, 1 In-Game, 2 Online

SKYLERS FUCKIN PWNING CLAN
275 Members - 0 Chatting, 26 In-Game, 76 Online

GEARS Friends & Students
52 Members - 0 Chatting, 6 In-Game, 18 Online

MIKE'S fun group
8 Members - 0 Chatting, 1 In-Game, 2 Online

!MASTER KILL
50 Members - 0 Chatting, 5 In-Game, 15 Online

Totaly Loco Peeps
15 Members - 0 Chatting, 1 In-Game, 1 Online

undead zombys
9 Members - 0 Chatting, 0 In-Game, 0 Online

The Fire Birds
6 Members - 0 Chatting, 0 In-Game, 0 Online

Counter-Terrorist Squad Delta
5 Members - 0 Chatting, 0 In-Game, 0 Online

kill me i kill u
14 Members - 0 Chatting, 0 In-Game, 2 Online

SKULL SHOT SHOOTERS
4 Members - 0 Chatting, 0 In-Game, 1 Online

Killbox Rockerz Friends
226 Members - 0 Chatting, 31 In-Game, 89 Online

Save The Game - HL²DM
1290 Members - 0 Chatting, 157 In-Game, 462 Online