Call of Duty: Modern Warfare 3 delivers a large-scale Zombies experience, which works differently to all of the Zombies modes of the past. You get more than a starter pistol here, but there are still some major limitations to your loadout. Here we break down how custom weapon builds work in this year's Zombies mode.

MW3 Zombies is an extraction mode

It's important to understand that this year's Zombies isn't a traditional round-based mode, nor does it work like the most recent objective-style modes from Black Ops Cold War or Vanguard. MW3 Zombies is a high-risk trios mode in a PvE environment, where you can have the option to choose how you want to play, which includes looting for high-value items and gear and completing story based Operation Deadbolt missions.

Just like MW2's DMZ, you keep your weapons and gear with a successful exfil, but failing to extract from the match means you'll lose everything in your inventory with the exception of one weapon type.