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The game will release in calendar 2013. Platforms weren’t specified.

“Our quest to sign the best artists and work with the best talent continues,” said THQ core boss Danny Bilson.

“Turtle Rock Studios is responsible for one of the most original, critically acclaimed co-operative games of this generation, and we are incredibly excited to be working with them on their next project, which looks set to make a similar impact in the multiplayer space.”

Turtle Rock COO Phil Robb added: “This project is the most ambitious thing we’ve ever attempted, and we’re inspired by the support THQ has shown to help us realize that vision. We’re going to take the first person shooter experience to a whole new level, and we can’t wait to show the game for the first time in the months ahead.”

THQ has made clear, though, that the new game – which is still to be named – will not be shown at E3.