The event will run until November 1st and offers a reasonable chunk of appropriately ghoulish goodies, and loosely Hallowe'en-themed modes.
Gamers will be able to obtain brand-new Halloween themed loot, enjoy an XP-boosting event, defeat zombies in a new mode and earn event exclusive items for free. A special trailer for the event has also been released.
Infinite Warfare introduces new weaponry, new player abilities and stunning new settings to the Call of Duty franchise.
To receive the free items during Halloween Scream, players need to log into multiplayer between Monday and Friday morning while online and visit the Quartermaster. It'll kick off with the first chapter, Zombies in Spaceland, and features two chapters per week, culminating with The Beast from Beyond.
This mode will only be back until October 12 and allows players to use gestures to kill their opponents. There will also be a new Boss Battle mode for Call of Duty Zombies, where you'll be able to play against boss after boss in the Zombies universe, as long as you have the corresponding DLC packages. If you play the game on this map, you'll get double XP as well.
It's all part of this month's ongoing event, Halloween Scream.