Treyarch has announced that Black Ops 2’s Zombies mode will feature a story-based campaign and new competitive mode, along with special zombies and future-tech weaponry.

Tranzit is Zombies' new story-based campaign, an open-area game world with interconnected zones.

A fortified bus will allow travel between zones, and players will have to fight off the hordes as they do so.

They'll also be able to alight the bus and explore the fog-draped landscape for items and new dangers.

Tranzit mode will feature "buildables" – player-created items that can be used as weapons for defensive purposes. For example, DIY assault shields can be planted for mobile cover purposes.

Treyarch has hinted that Zombies mode will tie back into the fiction of the Moon map released last year for the original Call of Duty: Black Ops.

"If you played Moon, the actions you had there may have had some impact on what happens in Black Ops 2 Zombies," said Treyarch studio boss Mark Lamia.

Grief is a new competitive mode that pits two human teams against each other as well as zombies.

Players cannot directly shoot each other, but as the title suggests there ways to make sure the zombies catch up with the other team first.

Between two and eight players can participate.

Features from the vanilla Black Ops multiplayer such as skill-based matchmaking and custom game options including a headshots-only setting will feature in all Zombies modes.

Call of Duty: Black Ops 2 will be released for PlayStation 3, PC, and Xbox 360 on November 13.

A Wii U version is due at that console's launch on November 30..