Zombies

'Zombies' is one of the new game modes to play cooperatively. It first appearance was in Call of Duty World at War, and then Black Ops and it's unknown if Modern Warfare 3 will have Zombie mode. Zombie mode was incorporated to Call of Duty Modern Warfare XX in Update 1.1 (550 MB) and in Urban Warfare in Update 1.1 (622 MB).

New Features

 * Difficulty Selection: Simple (100% Health NO Auto Regen, Zombie DMG: 5%), Normal (100% Health, Zombie DMG: 50%), Nightmare (50% Health, Zombie DMG: 50%).
 * New Characters!
 * New Maps!
 * Special Items in different levels!

Modern Warfare XX Zombie Maps

 * Yorkshire Castle (USMC, Damon Williams; SAS, Randall Cottrell; Spetsnaz, Alexei Bradinsky; OpFor, Omar Hassan).
 * Boston Outbreak (USMC characters).
 * Concert Arena (USMC, Damon Williams; SAS, Randall Cottrell; Spetsnaz, Alexei Bradinsky; OpFor, Omar Hassan).

Urban Warfare Zombie Maps

 * 2 Weeks Later (HECU characters)
 * Zombverines! (U.S. Army Rangers characters)
 * Washington (USMC, Damon Williams; SAS, Randall Cottrell; Spetsnaz, Alexei Bradinsky; OpFor, Omar Hassan)
 * Execution Place (USMC, Damon Williams; SAS, Randall Cottrell; Spetsnaz, Alexei Bradinsky; OpFor, Omar Hassan)
 * Kingdom (USMC, Damon Williams; SAS, Randall Cottrell; Spetsnaz, Alexei Bradinsky; OpFor, Omar Hassan)
 * Parlament (USMC, Damon Williams; SAS, Randall Cottrell; Spetsnaz, Alexei Bradinsky; OpFor, Omar Hassan).

Special Items

 * Holy Water: Hidden in the Yorkshire Castle and Kingdom levels. It revives all of your dead teammates and kill zombies within dead teammate's action radius.
 * Defibrilator Equipment: Hidden in almost all levels, it revives a random dead teammate. (Less chance for those recently killed).
 * Death Machine: Hidden in all levels. It grants you a minigun with 500 ammo count.
 * White Death: Hidden in all levels. It kills zombies surrounding you.