Survival Mode

Survival mode is a game type on Call of Duty: Modern Warfare: Mobilized, and a Special Ops Playlist in Call of Duty: Modern Warfare 3. On Call of Duty: Modern Warfare: Mobilized, it is exclusive to Single Player, while in Call of Duty: Modern Warfare 3, Survival mode can be played Cooperatively with a partner.

Call of Duty: Modern Warfare: Mobilized
It is only unlocked if the player either uses a cheat code, or beats the campaign on Hardened difficulty. Using a cheat code only temporarily unlocks it, while beating Hardened unlocks it permanently.

There are four maps in Survival. They are: Withstand, Persistence, Outlast, and Endure.
 * Withstand is in a bombed-out apartment building in Russia. There is debris all around the apartment for the player to take cover behind.
 * Persistence is in a military aircraft hangar somewhere in South America. There are several large supply cases for the player to take cover.
 * Outlast is in a small courtyard in South America. Fallen pillars, gates, and a car are all available for the player's cover.
 * Endure, the final map, is in a war-torn Middle-Eastern town. Debris is littered everywhere for cover.

When the player first unlocks the mode, they will begin with Persistence only, and other maps are progressively unlocked. To unlock a map, the player must survive at least three minutes in the previous map. At the beginning of every game, the player starts out with a USP and three Frag Grenades, but there are three randomly generated weapons that spawn on the ground, and eight seconds are given for the player to gather these weapons, and/or to find cover. The weapons found on the ground change every minute. The weapons that can be found are the M4A1 Red Dot, AN-94, AK-74, P90, MP5, MP7, M40A3, AA-12, M249, and the RPG-7. All of the weapons have a large amount of spare ammunition, and, in the M249's case, it has a 200-round mag, where it would be found in other modes to have a 100-round mag.

There is no Co-op for this mode.

Call of Duty: Modern Warfare 3
"In Survival mode you will fight off waves of increasingly difficult enemies as you earn XP and unlock several types of armories to expand your arsenal and load-out customization along the way."

- Description of Survival Mode in the Survival Mode trailer.

Survival mode returns in Call of Duty: Modern Warfare 3 as a gametype within Spec Ops mode. In Survival mode, players must fend off waves of A.I controlled enemies on several different multiplayer maps. The waves are randomized, yet increasingly difficult, so that in the later stages of the game, players can expect to face multiple Juggernauts, Dogs strapped with C4 and enemy air support simultaneously. There is no means of winning in this game mode, the waves will continue until the player has lost. Like other Spec Ops missions, co-op is available for this mode, both online or split-screen.

Survival mode also features a monetary system which allows players to buy items such as thumb|300px|right|Survival Mode Trailer For MW3air support, sentry guns, weapons, and even friendly NPCs to assist the player throughout the match. Currency is earned by killing enemies and additionally by executing spree kills, headshots and other feats. In addition to their normal regenerating health, players start each match with an armor rating, which will diminish as the player takes damage. New armor and armor upgrades can be purchased at a gear armory. When a wave is over, both players must press Select to start the next wave, allowing them time to ready themselves between waves or buy support, weapons, perks, weapon attachments, equipment, etc. After the players press Select, the wave start from a countdown from 5. If the players are not ready by 25 seconds, the wave start automatically.

Weapons

 * M16A4
 * AK-47
 * M4A1
 * SCAR-L
 * Type 95
 * ACR 6.8
 * G36C
 * FAD
 * CM901
 * MP5
 * MP5K
 * M60E4
 * PKP Pecheneg
 * Model 1887
 * USAS-12
 * FN Five-seveN (starting weapon)
 * RPG-7
 * Riot Shield

Maps

 * Dome (Modern Warfare)
 * Paris (Multiplayer Map)
 * Arkaden
 * Underground
 * Village

Perks

 * Extreme Conditioning
 * Steady Aim
 * SitRep
 * Last Stand

Equipment

 * Frag Grenade Refill
 * Flashbang Refill
 * Claymore x5 (10 Max)
 * C4 x5 (10 Max)
 * RPG-7 x2 (4 Max)
 * Sentry Gun
 * Sentry Grenade Launcher
 * Body Armour
 * Self Revive
 * Riot Shield

Air Support

 * Predator Missile
 * Air Strike
 * Delta Squad
 * Riot Shield Squad
 * Perk Care Package