Gun Game

"Each player starts with the same basic pistol. Every time you kill an enemy with your gun, you're upgraded to the next weapon. Anyone killed with a melee attack is demoted to the previous weapon, so watch your flank. Suicides also set you back to the previous tier, most often occurring when using explosive weapons. The match ends when someone cycles through all twenty weapons. Success in Gun Game requires aggressive tactics and familiarity with each weapon in the rotation. Don't worry about dying - just go for a lot of successive kills."

- Call of Duty ELITE description.

Gun Game, also known as All The Guns as an April Fool's day joke , is a Wager Match game mode in Call of Duty: Black Ops, a private match custom game mode, and as part of FFA Gunplay in Call of Duty: Modern Warfare 3 as well as a game mode in Call of Duty: Modern Warfare 3: Defiance, a party game mode in Call of Duty: Black Ops II, a standard playlist in Call of Duty: Ghosts and was added on February 13th, 2015 in Call of Duty: Advanced Warfare as a bonus playlist gametype.

Overview
The game consists of six players competing in a free-for-all-style game. As players get more kills, the player will receive different weapons. However, melee kills do not advance the killer to a new weapon, but demote players to their previous weapon tier instead. The first person to achieve a kill with all twenty (or 18 in MW3 and Ghosts; 24 in Advanced Warfare) weapon tiers wins. However, if the match ends without anyone getting a kill with all the weapons, the player on the highest weapon tier wins the match. Due to the fact that only 20, 24 or 18 kills are needed to win, and the game is a Free For All, games are usually fairly short.

Direct suicides with a weapon will result in a demotion. By definition, this means being caught in the blast of an explosive weapon's splash damage. Suicides by car bombs or red barrels will also demote the player, but suicide by fall damage will not except in Black Ops II.

Also, getting double kills will not advanced the player by two weapon tiers; only one (except in Call of Duty: Advanced Warfare).

Call of Duty: Black Ops

 * 1) Python Speed Reloader
 * 2) Makarov Dual Wield (formerly ASP Dual Wield)
 * 3) SPAS-12
 * 4) Stakeout
 * 5) MP5K
 * 6) Skorpion Dual Wield
 * 7) AK74u
 * 8) M14
 * 9) M16
 * 10) Famas
 * 11) AUG
 * 12) HK21
 * 13) M60
 * 14) L96A1
 * 15) WA2000
 * 16) Grim Reaper (formerly RPG)
 * 17) M72 LAW
 * 18) China Lake
 * 19) Crossbow
 * 20) Ballistic Knife

Call of Duty: Modern Warfare 3

 * 1) M4A1 Red Dot Sight
 * 2) ACR 6.8 Red Dot Sight
 * 3) PP90M1 Red Dot Sight
 * 4) Type 95 Red Dot Sight
 * 5) MK46 Foregrip
 * 6) UMP45 Red Dot Sight
 * 7) MP7 Red Dot Sight
 * 8) Striker Foregrip
 * 9) Barrett .50cal
 * 10) L86 LSW Foregrip
 * 11) P90 Red Dot Sight
 * 12) AK-47 Red Dot Sight
 * 13) RSASS
 * 14) SPAS-12 Foregrip
 * 15) MP9 Red Dot Sight
 * 16) G18 Red Dot Sight
 * 17) .44 Magnum Tactical Knife
 * 18) P99

Private Matches (Default Setup)
''This is the default setup for Gun Game on private matches. The weapons and order they are used can be changed, but the attachments are randomly assigned in a fashion similar to how the defaults are.''
 * 1) Desert Eagle Tactical Knife
 * 2) G18 Red Dot Sight
 * 3) MP9 Red Dot Sight
 * 4) MP5 Red Dot Sight
 * 5) P90 Red Dot Sight
 * 6) MP7 Red Dot Sight
 * 7) AK-47 Red Dot Sight
 * 8) SCAR-L Red Dot Sight
 * 9) PKP Pecheneg Foregrip
 * 10) MG36 Foregrip
 * 11) SPAS-12 Foregrip
 * 12) Model 1887
 * 13) Type 95 Red Dot Sight
 * 14) MK14 Red Dot Sight
 * 15) Barrett .50cal
 * 16) MSR
 * 17) XM25
 * 18) Javelin

Call of Duty: Modern Warfare 3: Defiance

 * 1) M9
 * 2) Desert Eagle
 * 3) M4
 * 4) SPAS-12
 * 5) SKS
 * 6) M10
 * 7) Scoped M4
 * 8) RPD
 * 9) MP7
 * 10) M4 Red Dot Sight
 * 11) AA-12
 * 12) M249 SAW
 * 13) M14 Scoped
 * 14) P90
 * 15) M79
 * 16) G36C
 * 17) Skorpion
 * 18) MG4
 * 19) SCAR-L
 * 20) M72 LAW

Call of Duty: Black Ops II

 * 1) B23R Tactical Knife
 * 2) KAP-40 Dual Wield
 * 3) Executioner Laser
 * 4) KSG Quickdraw Handle
 * 5) M1216 Extended Clip
 * 6) MSMC Grip
 * 7) Skorpion EVO Laser
 * 8) Chicom CQB Reflex
 * 9) M27 MMS
 * 10) M8A1 EOTech
 * 11) SMR ACOG Scope
 * 12) QBB LSW Target Finder
 * 13) MK 48 Hybrid Optic
 * 14) SVU-AS Dual Band
 * 15) DSR 50 Variable Zoom
 * 16) Ballista Iron Sight
 * 17) SMAW
 * 18) RPG
 * 19) Crossbow
 * 20) Ballistic Knife

Call of Duty: Ghosts

 * 1) Random Handgun
 * 2) Random Shotgun
 * 3) Random Submachine Gun
 * 4) Random Assault Rifle
 * 5) Minigun or Random Light Machine Gun
 * 6) Random Marksman Rifle
 * 7) Random Submachine Gun
 * 8) Random Assault Rifle
 * 9) Minigun or Random Light Machine Gun
 * 10) Random Launcher
 * 11) Random Sniper Rifle
 * 12) Random Submachine Gun
 * 13) Random Assault Rifle
 * 14) Random Shotgun /w Slug Rounds & Red Dot Sight
 * 15) Random Marksman Rifle
 * 16) Random Sniper Rifle
 * 17) .44 Magnum Akimbo ACOG
 * 18) Combat Knife + Throwing Knife (Kill must be with Throwing Knife to end game)

Call of Duty: Advanced Warfare
Note: as of an update for Call of Duty: Advanced Warfare, Gun Game now uses random variants of different guns instead of the default guns.
 * 1) ASM1
 * 2) Ameli
 * 3) IMR
 * 4) KF5
 * 5) HBRa3
 * 6) MP11
 * 7) AK12
 * 8) SN6
 * 9) ARX-160
 * 10) AMR9
 * 11) Bulldog
 * 12) MK14
 * 13) EM1
 * 14) Tac-19
 * 15) Pytaek
 * 16) S-12
 * 17) XMG
 * 18) EPM3
 * 19) MORSpussy
 * 20) knob
 * 21) RW1
 * 22) PDW
 * 23) MP443 Grach
 * 24) Atlas 20mm
 * 25) MAHEM
 * 26) Crossbow

General

 * If the player kills someone else by blowing up a car with a launcher, they don't advance to the next tier.
 * If the player kills someone with a launcher and then kills themselves, they will go back one tier. However, if the enemy damaged the player before they killed themselves, the other player will get an "Assisted Suicide" kill, but will not advance.
 * Kills from the grave (afterlife kills) will advance the player a tier.
 * David Vonderhaar, the design director for Treyarch, states that the idea for this game mode came "straight from the community," which was a thread created on their own Community Forums. Gun Game had an overwhelming demand from the majority of the community.

Call of Duty: Black Ops

 * Even though the icon for Gun Game is a Commando, it is not featured in the game mode.

Call of Duty: Modern Warfare 3

 * Gun Game was removed from FFA Gunplay along with One in the Chamber on September 1st 2012 due to a petition made by the fans asking for an All or Nothing only playlist.

Call of Duty: Ghosts

 * In Ghosts, the first sixteen weapons are randomized within their class, with random attachments. The player can view their current weapon and attachments by selecting Change Class in the menu. However, the assault rifle at thirteen will always have no attachments and the shotgun at fourteen will always have the Slug Rounds attachment in conjunction with a Red Dot Sight.
 * In Ghosts, the player has two perks, Marathon and Reflex.
 * However, Reflex is almost useless in this game mode, as weapon swaps are not faster when players advance to the next gun. It is only useful when in the final tier, as it affects the Throwing Knife.

Call of Duty: Advanced Warfare

 * Gun Game seemed to have been planned to be released as a game mode in Call of Duty: Advanced Warfare, as in one issue of Newsweek Magazine, it was included with a list of game modes in Advanced Warfare ; in addition, audio files for the initial start-up exist. Gun Game was later added to the game on February 13th, 2015.