"After almost 6 years at Infinity Ward, I resigned today," wrote Shiring on Twitter. "I'm incredibly proud of everything we accomplished and I'm going to miss everyone." Shiring joined Infinity Ward during Call of Duty 2 while McCandlish was there from Call of Duty.

Their departures came to light on the day that fired Infinity Ward co-founders Vince Zampella and Jason West announced the founding of their new development studio Respawn Entertainment, which has signed an exclusive publishing deal with Activision's rival Electronic Arts through its EA Partners scheme. However, there's no indication yet of McCandlish or Shiring joining Respawn, or the events being connected.