Zombies OriginOne of the most beloved Call of Duty games, and a unique shooter from the X360 era, are seemingly coming to Game PassGame Pass continues to amass a large library of classic Call of Duty games, and it appears the list will be gaining one major addition next year.Image credit: Activision, Treyarch. News by Sherif Saed Contributing Editor Published on Dec. 24, 2024 It looks like one of next years Game Pass updates will be bringing us some classic bangers, particularly those of us who grew up playing shooters on the Xbox 360/PS3 generation. The latest leak is yet another thing that points to Microsofts continued interest in expanding the services line-up with classic, back-catalogue titles from the many studios it owns.This time, Xbox is pulling from the deep Activision Blizzard well.To see this content please enable targeting cookies. According to insider and eXputer writereXtas1s, Call of Duty: World at War, as well as Singularity are both on their way to Game Pass. EXtas1s does have a decent track record when it comes to these sort of leaks.The insider shared a screenshot of World at War on the Microsoft Store, which is how PC games are made available when theyre part of PC Game Pass. It is very unlikely that Activision simply intends to start selling the PC version through the MS Store. The more likely scenario is that its preparing for a Game Pass announcement.Seeing as the line-up between console and PC is near identical, it stands to reason that World at War will also be arriving on Xbox Game Pass at the same time. Interestingly, the listing does not show Achievement support, though that could just be missing at this time.World at War, off course, is well remembered for introducing Zombies mode to Call of Duty. The co-op survival mode started out as something of an Easter Egg intended to be played by a small number of people, but has since grown to become a major part of Treyarchs games. Zombies has also made its way to non-Treyarch-developed Call of Duty games, too, and is considred a core pillar of the series today.The other classic Xbox 360 shooter part of the same leak is Singularity, Raven Softwares 2010 sci-fi shooter that is much more appreciated today that it ever was when it came out. The bad news? The two games apparently wont be joining the line-up until May. Thats close to halfway into 2025. Its likely we may even see some other Call of Duty in Game Pass before then, but thats what we have to go on for now.