Jason Blundell, one of the chief creators of Call of Duty's popular zombies mode, has left Treyarch after 13 years.
In a statement published to Twitter, Blundell said his time working on zombies had been "special", and thanked the zombies community for helping to create "memories I will cherish for a lifetime".
Blundell began working on nazi zombies - 1-4 player bonus mode in which players fought against waves of enemies - back in 2007 for 2008's Call of Duty World at War. World at War was the first game in Activision's blockbuster shooter series to feature a zombies mode, although it was only playable once the campaign was completed. It would go on to gain huge popularity within Treyarch's Black Ops games as a fully-fledged mode separate to campaign and traditional multiplayer.