Activision and Treyarch have released a new trailer highlighting the Classified Zombies Bonus map in Call of Duty: Black Ops 4.

What was top secret is now the top threat to mankind.

Get ready to take on an army of the undead. The world depends on it. The ‘Classified’ Zombies experience is in Call of Duty®: Black Ops 4, playable now with the Black Ops Pass.