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The Uncharted Game Space takes the form of Sully's bar, complete with "photos" of characters from the game on the walls. The space is made up of several rooms and rull of relics and mounted animal heads. There's a chance that something in there might be indicative of where the series is headed (a diver's helmet? Uncharted 2: Quest for Atlantis confirmed?)
The Warhawk space is similar, featuring assets from the game. The best things about these Game Spaces are the interactive elements. Uncharted has a locked door with a keypad input. The number can be found by carefully looking around and this will open another room for you to explore. There's also an Uncharted-inspired platforming mini-game. The Warhawk space has a sandtable for you and your clan to plan out your method for the upcoming match before jumping into a game.