Who Goes There? Blair and Clark Character Expansion PackWho Goes There? is a cooperative game of growing paranoia. At the beginning of the game, all players are human and there is no reason not to fully trust the other players. As the temperature drops and mistakes are made, players start to doubt everything and everyone around them. This is an expansion that requires the Basic Edition to play. This expansion adds two playable characters, (Blair the Biologist and Clark the Dog Handler), to the game.