Call of Duty: Black Ops Cold WarZombies is one of the most fan-loved game mode options within the title. With the release of every newCall of Dutycomes a hidden hope that Zombies will see another chapter. AlthoughCall of Duty: Black Ops Cold Warmade some massive changes to the Zombies formula, the developers are offering a new event that is a first for the franchise.

There is a ton of secrets hidden within the Dark Aether storyline. AfterCall of Dutydeveloper Treyarchwrapped up the prime Aether story, this resurgence of the undead has a new and more devastating source. Now, for the first time inCall of Dutyhistory, Treyarch is allowing a free access week for anyone interested in uncovering the truth to the Dark Aether experience.

RELATED:Call of Duty: Black Ops Cold War Mid-Season Update Adding New Content Later This Week

Shortly after the addition of a brandnewCall of Duty: Black Ops Cold WarZombies game mode, Cranked, comes a chance for players to experience the undead for free. The free week will include access to the entire Zombies experience, granting fans a chance to take on Die Maschine and explore the WWII-era laboratory. Do note that anyone on PlayStation will gain access to the PlayStation-exclusive game mode Onslaught, which pits two players in an intense Zombies shooting experience. Bring a powerful loadout into the fray, and try to survive increasingly aggressive waves of undead across rotating safe zones. Free access is expected to begin on January 14 and last until January 21.

For many Zombie enthusiasts, theCall of DutyZombie mode holdsas a primary reason to purchase the game. Treyarch has put out a continuously evolving game experience that seems to only build upon the initial Zombies foundations set several games ago. AsCall of Duty: Black Ops Cold Warfans explore the Dark Aether, there are years of history set aside to reinforce the new start to an epic narrative.

It is also good to note that players who have progressed weapons in eitherCall of Duty: Black Ops Cold WarorCall of Duty: Warzonewill see their progress has carried over.Call of Duty: Black Ops Cold Warconnected all the progression tracks during the initial integrationallowing weapon levels, player levels, and blueprints to appear in both games and Zombies. Incoming fans should see their favorite blueprints readily available for their dive into an undead shooter experience.

Player progression during the event will also add toCall of Duty: WarzoneSeason 1’s progress. Level the battle pass against a never-ending horde of AI enemies, and watch the tiers rise with XP boosts and other advantages for the season.

Call of Duty: Black Ops Cold Waris available on PC, PS4, PS5, Xbox One, and Xbox Series X/S.

MORE:Call of Duty: Black Ops Cold War Leak Give First Look At Sanatorium