In October 2009, Obsidian was contacted by South Park Digital Studios to develop a game set within the South Park universe.[42] The team originally thought the phone call from South Park Digital Studios was a prank carried out by another company located in the same building.[43] Obsidian met with South Park's creators, Matt Stone and Trey Parker, with the two parties agreeing that it was critical that the game share the television show's construction paper-like visual aesthetic.