Xbox is closing down Ninja Theory, the studio behind the Hellblade series, a source tells The Verge . Staffers were told on a call on Monday about the closure, but they are hoping the studio will find a buyer. The closure comes as “several” Xbox studios at Microsoft, including Compulsion Games and Double Fine, are in “active negotiations” about spinning off, Bloomberg reports . The closure and negotiations follow Xbox CEO Asha Sharma and chief content officer Matt Booty warning last week of a “