Sourceforts
478 Members - 0 Chatting, 50 In-Game, 132 Online

Acolytes of Minerva
218 Members - 0 Chatting, 12 In-Game, 55 Online

KG
2 Members - 0 Chatting, 1 In-Game, 2 Online

The Podcast
36 Members - 0 Chatting, 2 In-Game, 14 Online

Heralds of Destruction
28 Members - 0 Chatting, 3 In-Game, 11 Online

Level Designer
898 Members - 0 Chatting, 74 In-Game, 217 Online

Blackened Interactive
24 Members - 0 Chatting, 3 In-Game, 11 Online

HL2DM University
1933 Members - 0 Chatting, 218 In-Game, 620 Online

aperture science
151 Members - 0 Chatting, 14 In-Game, 43 Online

Cool Kids club
17 Members - 0 Chatting, 6 In-Game, 10 Online

Monkey Business
1054 Members - 0 Chatting, 97 In-Game, 330 Online

Super Smash Bros
140 Members - 0 Chatting, 9 In-Game, 41 Online

Zendeath
17 Members - 0 Chatting, 4 In-Game, 10 Online

Mario Kart Source
169 Members - 0 Chatting, 10 In-Game, 50 Online

Outer Heaven Gaming Community
63 Members - 0 Chatting, 8 In-Game, 16 Online

Serious Facepunchers
179 Members - 9 Chatting, 25 In-Game, 69 Online

SDK Help
157 Members - 0 Chatting, 8 In-Game, 31 Online

*503* Portlands Bong Squad
280 Members - 0 Chatting, 25 In-Game, 98 Online

Fresh Prince of Bel-Air
16 Members - 0 Chatting, 4 In-Game, 6 Online

F7 Lans
62 Members - 0 Chatting, 7 In-Game, 29 Online

Tim style owange
108 Members - 0 Chatting, 4 In-Game, 20 Online

HL2: Portal
3455 Members - 0 Chatting, 146 In-Game, 729 Online

OrangeBoxing
48 Members - 0 Chatting, 4 In-Game, 16 Online

GAMESENSE
5 Members - 0 Chatting, 1 In-Game, 1 Online

The Escapist
299 Members - 0 Chatting, 18 In-Game, 83 Online

Counter Strike: 1,6
365 Members - 0 Chatting, 24 In-Game, 57 Online

Team Fortress 2 Mappers
291 Members - 18 Chatting, 44 In-Game, 130 Online

ThinkingWithPortals Mapping
120 Members - 0 Chatting, 12 In-Game, 34 Online

Combine SWAT
224 Members - 0 Chatting, 27 In-Game, 58 Online

I would make love to Robin Walker's voice
5 Members - 0 Chatting, 1 In-Game, 3 Online

Music In My Ears
9 Members - 0 Chatting, 1 In-Game, 2 Online

Portal Map Development
175 Members - 0 Chatting, 10 In-Game, 51 Online

sdknuts.net
16 Members - 0 Chatting, 3 In-Game, 4 Online

drunken bears
11 Members - 0 Chatting, 4 In-Game, 4 Online

Logic Portals
25 Members - 0 Chatting, 4 In-Game, 10 Online

Clan 3D
121 Members - 0 Chatting, 14 In-Game, 32 Online

Half Life 2 Episode Two
727 Members - 0 Chatting, 60 In-Game, 173 Online

Source Mapping Community
788 Members - 0 Chatting, 64 In-Game, 197 Online

Destination Imagination
4 Members - 0 Chatting, 1 In-Game, 2 Online

Project Manhunt
96 Members - 0 Chatting, 9 In-Game, 27 Online

Grand Theft Auto World
136 Members - 0 Chatting, 13 In-Game, 35 Online

planetphillip
42 Members - 0 Chatting, 2 In-Game, 4 Online

House of Gamers
1643 Members - 0 Chatting, 120 In-Game, 350 Online

hlcoders
105 Members - 0 Chatting, 8 In-Game, 33 Online

Australia/New Zealand SpaceBuild
30 Members - 0 Chatting, 3 In-Game, 10 Online

Keep Friends Close
26 Members - 0 Chatting, 2 In-Game, 5 Online

N1C3
13 Members - 0 Chatting, 1 In-Game, 1 Online

hl2 group (HL2)
12 Members - 0 Chatting, 2 In-Game, 5 Online

Portal Friends
28 Members - 0 Chatting, 4 In-Game, 13 Online

Construct
47 Members - 0 Chatting, 11 In-Game, 21 Online

F7 Team Fortress 2 Friends
52 Members - 0 Chatting, 8 In-Game, 33 Online

FOR BEST INSIDERS
218 Members - 0 Chatting, 34 In-Game, 113 Online