All Groups
Left 4 Dead 2 PC - Public
142,600 Members   |   3,845 In-Game   |   22,650 Online   |   19751 In Group Chat
15,888 Members   |   479 In-Game   |   3,691 Online   |   98 In Group Chat
2,091,938 Members   |   56,271 In-Game   |   333,051 Online   |   175485 In Group Chat
Steam Universe - Public
1,765,522 Members   |   46,404 In-Game   |   305,682 Online   |   39208 In Group Chat
Steam Music - Public
264,218 Members   |   13,883 In-Game   |   51,688 Online   |   3845 In Group Chat
7,139 Members   |   334 In-Game   |   2,046 Online   |   362 In Group Chat