In the learning sciences and game studies communities, there has been an increasing interest in the potential of game-related "paratexts" and "surrounds" in supporting learning, such as online discussion forums and gaming affinity spaces. While there have been studies identifying how learning occurs in such communities, little research has been done on learning at the aggregate level. This study examined the social construction of knowledge in two sections of the discussion forums in the TUG ("The Untitled Game") gaming affinity space. Findings suggest that game-like prompts and sections in online discussion forums can spur higher level forms of interaction and learning and can have implications for the design of gaming communities in which the social construction of knowledge is a desired outcome.