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ThinkingWithPortals Mapping - Public
31,151 Members   |   277 In-Game   |   3,362 Online   |   316 In Group Chat
Portal 2 Authoring Tools - Beta - Public
143 Members   |   3 In-Game   |   36 Online   |   14 In Group Chat
Portal 2: Pro Gamers - Public
551 Members   |   23 In-Game   |   136 Online   |   68 In Group Chat
Human Fall Flat Workshop - Public
195,798 Members   |   4,992 In-Game   |   30,822 Online   |   19385 In Group Chat
Coop Hub Buddies (Portal 2) - Public
1,942 Members   |   74 In-Game   |   452 Online   |   997 In Group Chat