The fan-favorite zombies mode from the Call of Duty franchise won't be featured in Call of Duty: Black Ops Declassified, despite the game being the PlayStation Vita's debut CoD installment.

Activision PR representative Dan Amrich confirmed the exclusion in a statement, where he suggested the omission of a zombies mode from the shooter was for a "decent reason", which is to prioritize the game's multiplayer component.

"That makes sense to me. This is the first Call of Duty game on Vita, and it needs to deliver on its core strengths - arguably, multiplayer gaming with twin-stick controls in a portable format. That's the core experience, and that simply needs to come first.

"There's always a list of things you want to do and things you need to do, and at the end of the day, realistic goals are the ones that people actually attain."

Amrich said Declassified will, however, contain a Hostiles Mode that challenges players to defeat waves of enemies, but "alas, those enemies are not shambling corpses."

Call of Duty: Black Ops Declassified is due for a release on November 13, the same date Black Ops 2 launches worldwide on consoles and PC.