Activision and Treyarch have lifted the lid on Call of Duty: Black Ops II‘s Zombies mode, which follows four new characters through an open-world setting, complete with new weapons and three new game modes.

Joystiq has a full report on Zombies, detailing each game mode (one of which includes eight players), how the multiplayer engine affects things, and a basic rundown of Zombies in general.

Watch the reveal trailer below.