Fallout: New Vegas dev teaming with THQ on Comedy Central-licensed 360, PS3, PC game, due in 2012; Parker, Stone writing, voicing, overseeing.

Obsidian Entertainment has been teasing its next project since March, when CEO Feargus Urquhart called it a no-brainer of a licensed property. Today, GameStop-owned Game Informer magazine put all of the speculation to rest, pegging Obsidian’s “leading animation franchise” as Comedy Central’s South Park.

Announced via this month’s cover story, South Park: The Game is in development for the Xbox 360, PlayStation 3, and PC, with THQ handling publishing duties. GI characterized the game as a “full-scale” role-playing game, where players assume the role of a new kid in town tasked with making friends and defending South Park from a “wide range of threats.”

The magazine cover features the show’s iconic principle characters–Kyle, Stan, Cartman, and Kenny–surrounded by the quartet’s supporting cast. The pond’s reflection alters the scene, showing the boys in fantasy-inspired garb among a handful of different presumed “threats,” including a dragon, Satan, Manbearpig, and more.

In addition to writing the game’s script and performing voice-over work, show creators Trey Parker and Matt Stone are overseeing development. South Park: The Game is set for release sometime in 2012.

[UPDATE] Following the publication of this article, THQ officially announced South Park: The Game, confirming that it will be available during the back half of 2012 on the Xbox 360, PS3, and PC.