Call of Duty is a big deal every year, but perhaps never as much as this one, the first year that a new CoD will launch on Game Pass. Today, Microsoft showed off Call of Duty: Black Ops 6 at the Xbox Games Showcase, revealing lots of cool gameplay footage and details. We also learned how the cooperative Zombies mode will work - always the most important information for co-op enthusiasts like us.

This year's Xbox Games Showcase was light on cooperative content; Microsoft didn't seem to focus on co-op features in any of the game reveals. Still, the showcase did show some genuinely hot games, so we can't complain too much. Some of the games shown might even end up featuring co-op that hasn't been announced yet. In the meantime, let's look at all of the games that were announced and which ones we know will have co-op.

We don't know yet whether this year's Call of Duty (Black Ops 6) will feature a co-op mode, but they usually do. Microsoft and Activision have announced that the game will be revealed to the world on June 9, so we're hoping to find out some co-op details soon. What's more, Microsoft also announced today that Call of Duty: Black Ops 6 will be coming to Xbox Game Pass at launch. That's a big get for Xbox, and surely one of the reasons that Microsoft bought Activision in the first place.

The latest Zombies map to be added to Call of Duty: Black Ops Cold War is called 'Mauer der Toten,' meaning "Wall of the Dead." The Black Ops Cold War Zombies maps are surprisingly story-heavy, and this one sees the members of peacekeeping force Requiem forced to build a warhead to close the Dark Aether portal that was opened in Berlin by traitorous scientist Aleksandra Valentina. We played several co-op games on 'Mauer der Toten,' and we even found out how to unlock the robot, Klaus.

For co-op enthusiasts, Zombies mode is always a highlight of Call of Duty games. The Zombies mode in Call of Duty: Black Ops Cold War has slowly been telling the intricate story of Requiem, a CIA faction dedicated to sealing dimensional breaches and saving the world from a zombie apocalypse. That narrative continues with the impending arrival ...

If you wanted to see what Call of Duty offers for co-op players, now is a good time to dive into the Call of Duty: Black Ops Cold War's zombies mode, which is free from January 14th through the 21st. 

Call of Duty: Black Ops Cold War is going to receive a major update this week on January 14th, as the "mid-season update" goes live with the game across all platforms. While most of the changes are focused on the game's PvP modes with new maps, weapons, and playlists there is some good stuff for co-op fans.

The zambies are back. The ZAAAAMBIES return. Call of Duty: Black Ops Cold War has released and with it the ever present zombie mode made famous by Call of Duty: World at War. The new flavor of zombies is a lot of the same, but also tweaked to feel decidingly different. 

The third and final chapter in the "Chaos" zombies story has arrived. "Ancient Evil" is now available for Call of Duty: Black Ops 4 on the PlayStation 4 (sometime later for Xbox One and PC), provided you've got a Black Ops Pass. You're headed back to ancient Greece, but rather than a colosseum, you'll be exploring the underground city of Delphi and taking on some mythological beasts.

On Saturday, Treyarch took to Reddit to reveal its plans to celebrate the special day that is January 15 (1/15 -> element 115 the thing what made all dem zambies). Starting right about now, you can earn double character XP, double weapon XP, and double Nebulium Plasma (used to make helpful one-time use elixirs) in the Zombies mode for Call of Duty: Black Ops 4. But that's not all.

It's that time of year again.  Everyone is putting up lights, setting out cookies, and blasting their way through another menacing horde of the undead.

Since Call of Duty: World at War, the series staple for co-op has been its zombies mode. The four player cooperative mode has players balancing base building, weapon upgrades, and survival with attempting to proceed to higher and higher levels and unlock narrative secrets. Today Treyarch have revealed the zombies mode included with the multiplayer only Call of Duty: Black Ops 4.