Call of Duty: Advanced Warfare’s Exo Zombies mode has teased about prior to the game’s launch, and today, Activision and Sledgehammer Games are finally ready to share not only some information regarding the mode, but also a brand-new trailer that highlights the game mode.

Sledgehammer Games expects the first chapter of the Exo Zombies game mode to be released along with the Havoc DLC pack in early 2015. The developer shares the inclusion of a zombie mode actually didn’t come about until the team was wrapping up Advanced Warfare, when the team started playing around with the idea of what would happen if zombies were mixed with the title’s exoskeleton gameplay. The result is what will soon be available, Exo Zombies, which Sledgehammer is calling “an entirely new breed of zombies and an entirely new co-op experience” that’s unique to Advanced Warfare.

Those who are looking to kill countless zombies within Call of Duty: Advanced Warfare can choose to either purchase the Havoc DLC pack when it becomes available, or decide to purchase the title’s season pass, which will include the pack along with others.