2015[]
31 December 2015[]
- Adopted CROW-7
- Held New Year, Ice Breaking and Zombie Balloon events
- Updated Battlefield Supply
17 December 2015[]
- Patched Z-Noid
- Recruited Metatronic and Lilith
- Adopted JANUS-7 Christmas
- Introduced Transcendence Decoder
- Added Warhammer Storm to Transcendence Decoder
- Held Christmas events
- Introduced Month Weapon system
3 December 2015[]
- Adopted VULCANUS-11, Colt Python, SKULL-2, Heavy Zombie Knife and AWP Elf Ranger
- Recruited Rebecca and Ace
- Introduced [Pharaoh] Costumes and Random Item Box
- Resold Double-barreled shotgun for Upgrade Event
- Added Santorini and Snow Base into Zombie modes
- Held Claim Your Weapon event to achieve the Python
- Updated Weapon Experience and Battlefield Supply
19 November 2015[]
- Adopted THANATOS-3
- Updated Zombie Enhancement system
- Released Choi Ji Yoon and Galaxy Paints
- Added 9 new Medals and 2 new Achievements
- Held Pick Up and Melee Weapons License events
- Updated Weapon Experience and Battlefield Supply
5 November 2015[]
- Adopted Falcon and Lightning HMG-1
- Released Snow Base
- Held Claim Your Weapon event to achieve the Falcon
- Updated Bingo:
- Allowed players to change the special reward (after clearing Bingo) twice per month for free
- Added Special Reset button
- Log into the game during event period to receive CSOWC 2015 Spray (permanent) and play any Original game to get CSOWC Tattoo (30 days)
- Updated Weapon Experience and Battlefield Supply
22 October 2015[]
- Adopted VULCANUS-9
- Updated Zombie Giant: add RAH-66 Comanche for human team and Angra for zombie team
- Added 7 new Medals
- Held Halloween event
- Updated Weapon Experience and Battlefield Supply
8 October 2015[]
- Added Truth and Fastline to Zombie mode
- Adopted IMI Negev NG-7 and THANATOS-1
- Held Claim Your Weapon event to achieve the NG-7
- Held Bingo Commemorative Event:
- Added Ripper to Mileage Decoder
- Added Ripper to the list of Bingo Grand Prize
- 2× probability to Laser Minigun and Dual Uzi in Bingo
- Resold Katana, Dual Infinity and Double Barrel for Upgrade Event
- Held Fortune Cookie event
17 September 2015[]
- Released Collapse
- Adopted M4A1 Dark Knight and AK-47 Paladin
- Added Laser Minigun and Dual Uzi into Bingo
- Added Transcendence Piece for 2 weeks into Mileage Decoder
- Resold Mileage Decoder Bundles
- Held Mid-Autumn Festival
- Updated Weapon Experience and Battlefield Supply
3 September 2015[]
- Adopted QBS-09
- Released Eagle Paint
- Introduced S-Box, J-Box and M-Box
- Resold Calico M950, UTS-15, M14 EBR, ARX-160 and Barrett M95
- Held Bells event
- Held Claim Your Weapon event to achieve the QBS-09
- Updated Weapon Experience and Battlefield Supply
20 August 2015[]
- Released Bunny Yard and Parking
- Adopted VULCANUS-5
- Resold Franchi SPAS-12 for Upgrade Event
- Held Mosquitoes, Crazy Gun Deathmatch and Bot Zombie Premium Supply Box events
- Updated Weapon Experience and Battlefield Supply
6 August 2015[]
- Extended Level Limit from 72 to 250
- Added, changed and deleted some Daily Missions
- Added Brick Piece M777 and [Superhero] costumes to Code Box
- Introduced Level Up Coupon
- Resold Mileage Decoder Bundle
- Modified Zombie Tag
- Held Lucky Coin, Premium Decoder and Jackpot Point Box events
- Updated Weapon Experience and Battlefield Supply
- Fixed some bugs in Metro
23 July 2015[]
- Patched Grievance Update
- Patched Zombie Tag mode
- Added Greesia and Out City to Zombie Tag mode
- Adopted Air Burster
- Recruited Jin Se-yeon
- Held Find the Zombies, Premium Decoder and Jackpot Point Box events
- Updated Weapon Experience and Battlefield Supply
9 July 2015[]
- Released Another Truth
- Adopted VULCANUS-7
- Log in, play 30 & 60 minutes to get Premium Decoders
- Collect 100 kill points to get Jackpot Point Box
- Log in to receive Discount Coupons
- Fixed wrong grenade HUD icon for THANATOS-5
- Fixed Cloak bug in New Zombie Shelter
- Updated Weapon Experience and Battlefield Supply
25 June 2015[]
- Patched Zombie Mode Rework
- Adopted M134 Vulcan, Dual Kriss Custom and Zombie Grenade 2
- Added Premium Decoder and Jackpot Point Box
- Added Sapientia and Coil Machine Gun to Bingo
- Updated Weapon Experience and Battlefield Supply
11 June 2015[]
- Adopted PGM Hécate II
- Resold M14 EBR, Beretta ARX-160, Winchester M1887, M2 Browning and King Cobra (Confirmed Sets)
- Held Claim Your Weapon event to achieve the PGM Hécate II
- Held Melee Weapons License and Origin Weapons License event
- Replaced all old types of Decoder by Mileage Code Decoders
- Updated Weapon Experience and Battlefield Supply
4 June 2015[]
- Adopted THANATOS-5 and Norinco Type 86S
- Held Claim Your Weapon event to achieve the Norinco Type 86S
- Updated Weapon Experience and Battlefield Supply
21 May 2015[]
- Sold Mileage Supply Crate
- Added Dart Pistol, [Boxing Headgear] and [Boxing Champion Belt] costumes into Code Box
- Patched Sudden Death for Fun mode
- Released Mobius
- Added Estate and Metro into Zombie Annihilation
- Held Timed Bomb and Attendance Checking events
- Updated Weapon Experience and Battlefield Supply
7 May 2015[]
- Adopted FNP-45
- Recruited Krieg and Ha Ly
- Sold Vietnamese Classes Set
- Introduced [Non La] Costume
- Released Warehouse
- Held Claim Your Weapon event to achieve the FNP-45
- Held Sudden Attack Cross Event
- Updated Weapon Experience and Battlefield Supply
23 April 2015[]
- Adopted THANATOS-9
- Released Third Report
- Introduced Discount Coupon
- Held Special Nightmare event
- Updated Weapon Experience and Battlefield Supply
9 April 2015[]
- Adopted PJ MK3A1
- Resold M134 Minigun (Confirmed Set) and held Upgrade Event
- Held Claim Your Weapon event to achieve the PJ MK3A1
- Held Seed event
- Updated Weapon Experience and Battlefield Supply
26 March 2015[]
- Adopted Newcomen and Mileage Code Decoder
- Released Train Shed for Shotgun Battle
- Added [Idol Sunglasses] and [Idol Microphone] Costumes into Code Box
- Removed the Code Box (now all Decoders can be used without Code Box)
- Updated Bingo system (Bingo now becomes a permanent feature in game)
- Held Baseball, Bingo and April Fool's Day events
- Rebalanced Zombie Scenario: Season 1 Survival maps: Lost City, Double Gate and Trap
- Reduced the number of rounds to 5
- The completion required to get the respective medals are 400, instead of 100
- The freeze time is reduced
- Updated Weapon Experience and Battlefield Supply
12 March 2015[]
- Adopted M950 and Uzi
- Held Claim Your Weapon event to achieve the Uzi
- Updated Weapon Experience and Battlefield Supply
- Fixed some bugs:
- Modified some zombies' abilities
- Modified Battle Veteran
- Deleted Strong Lifepower and Excellent Genes (effect is not removed)
- Reduced the conditions required for zombie enhancement
- Fixed Zombie Escape recording bug
26 February 2015[]
- Updated Craft system
- Removed the Special Combat Blueprints and Components
- Adopted Lightning Rail and Fire Vulcan
- Held Bell event
- Updated Weapon Experience and Battlefield Supply
- Added new medals: [Exterminator], [Mech Warrior] & [Weapon Master]
- Added new achievements
10 February 2015[]
- Adopted THANATOS-11, Crossbow Advance, Horn Kujang and Blood Dripper
- Released Memories
- Resold Advanced Code Decoder, Code A Decoder and Code B Decoder bundles
- Held Crossbow Advance Upgrade Event
- Held Valentine, Letter Collecting Event and Bingo events
- Updated Weapon Experience and Battlefield Supply
22 January 2015[]
- Recruited Soy and Jim
- Sold CSO Assistant set
- Released Rising
- Held Dual Infinity Upgrade Event
- Updated Weapon Experience and Battlefield Supply
13 January 2015[]
- Patched Zombie File
- Released First Report and Second Report
8 January 2015[]
- Adopted RPG-7
- Held Coin Event
- Held Battlefield Supply Upgrade event
- Held Enhanced attendance event
- Held more Weapon Experience event
- Updated some contents:
- Increased Heavy Zombie's health
- Reduced Sting Finger's health
- Reorganized Family Achievement
- Items obtained from Family and extended storage periods will be collected
2014[]
18 December 2014[]
- Patched Free Update
- Reorganized Zombie Modes
- Improved PvP modes
- Changed some paid weapons and items to be free (default) for all players
- Changed the contents of Combat Blueprint
- Introduced Perfect Pick Recipe item
- Increased the performance of K3
- Reformed Craft system
- Changed the rewards of Special Mission, Daily Mission and Weekly Mission
- Updated the prizes for Promotion reward
- Reorganized Battlefield Supply
- Adopted THANATOS-7 and Tomahawk Christmas
- Resold AS50, MG3, Dual Infinity and Katana
- Sold Combat Blueprints and Durability Materials in shop
- Play CSO to get Christmas Box
- Removed Level Restriction of some weapons
- Fixed Deimos and Ganymede bug, SKULL-9 bug
- Removed Bloody Blade and some Zombie sets
- Held Christmas event
- Held more Weapon Experience event
4 December 2014[]
- Sold Wizard of Oz set
- Reorganized Fun mode and some Zombie Scenario maps
- Introduced Paint system
- Updated Zombie Annihilation
- Held Seoul CSO World Championship 2014
- Held EXP & Point Boost Event on Dust2, Inferno, Train, Santorini and Sanctuary
- Held Fun Kill Point Collection Event
- Held Bell event
- Held Zombie Match event
- Held more Weapon Experience event
20 November 2014[]
- Patched Zombie Annihilation
- Updated Zombie Enhancement
- Added Dominique and Brick Peace V2 into Code Box
- Added [Gentleman] Costumes into Code Box
- Held Fortune Cookie and Seed events
6 November 2014[]
- Adopted Gilboa Carbine
- Held Gilboa Carbine Upgrade Event
- Released Madness
- Resold OTs-14 Groza for Weapon Enhancement
- Held more Weapon Experience event
23 October 2014[]
- Added Papin and Alin to Code Box
- Added [Provocation] costumes
- Resold KSG-12, ARX-160, AS50 and M60E4
- Held Halloween event
7 October 2014[]
- Released Splash
- Adopted Crowbar Maverick and K1A Maverick
- Resold TDI Kriss Super Vector for Upgrade Event
- Resold Maverick [S] Combat Blueprint + Unlimited Durability item set
- Held more Weapon Experience event
18 September 2014[]
- Released Hell Ride
- Adopted Slasher and Erupt Cannon
- Adopted M1 Garand, M1918 BAR, Sten Mk2 and M1911 A1
- Sold World War II Set B
- Held Seed event
- Held more Weapon Experience event
4 September 2014[]
- Held Bingo event
- Adopted Rail Cannon and Plasma Grenade
- Patched Fight Yard
- Released Ice World
- Resold JANUS-7 sets
- Sold Decoder bundles
21 August 2014[]
- Adopted Mauser C96, MG42, Mosin-Nagant and MP40
- Sold World War II Set A
- Held World War II Weapons Event
- Resold SPAS-12 for Upgrade Event
- Held Mosquito event
7 August 2014[]
- Adopted JANUS-3
- Released Omen
- Released B-Box BLUE
- Held Lucky Coin event
- Held more Weapon Experience event
24 July 2014[]
- Recruited Henry and Gunsmith
- Sold Meister Package
- Introduced Manners system
- Adopted BALROG BLUE Series
- Held Find the Zombies event
- Resold Tactical Knife for Upgrade Event
- Held Dinosaur costumes event
- Held more Weapon Experience event
10 July 2014[]
- Adopted Petrol Boomer
- Introduced Zombie Giant
- Released Forsaken
- Held Time Bomb event
26 June 2014[]
- Added New Zombie Evolution System
- Re-balanced some weapons
- Added Weapon Experience system
- Added Bendita, [Afro Hair] & [Elegant Hair] costumes
- Held Bingo Event
- Held Code Decoder Blast Event
12 June 2014[]
- Adopted Galil Maverick and M1887 Maverick
- Held [Red Indian] Costumes event
- Resold SKULL-8, BALROG-III, JANUS-1 packaged with 100,000 points
- Resold XM2010, OTs-14 Groza, Parang and KSG-12
- Resold Dual Infinity for Upgrade Event
- Released Spirit Shot, Summoning Shot and Tornado Shot
- Introduced New Classic Battle
- Introduced Tutorial Mode for Zombie Scenario and Zombie Mods
- Enlarged inventory
29 May 2014[]
- Adopted JANUS-11
- Released Paranoia
- Clear all Zombie Scenario chapters chronologically to get [Asura] medal and Lightning HZ-1
- Kill 1000 zombies in Paranoia to get Poison Gun (1 usage)
15 May 2014[]
- Re:booted ranking system
- Introduced Matchmaking
- Added Isabelle and Aeolis into Code Box
- Resold SL8 for Upgrade Event
- Sold Code Decoders bundle set
29 April 2014[]
- Sold Journey to the West set
- Released Metro
- Resold Cart Rider Best Friend Package
- Collect 2014 kill points to get [Dao Head] costume
- Play for 3 hours to get [Bazzi Head] costume
17 April 2014[]
- Added Maverick Combat Blueprint
- Adopted PSG-1
- Added M60E4 Maverick and SPAS-12 Maverick
- Resold M2 Browning and Barrett M95 for Weapon Enhancement
- Held Battle Weapons, Seed and Special Nightmare events
1 April 2014[]
- Held April Fool Event:
- The players must have accounts, then they have to open the "game modes" section on the official website and choose Zombie 4: Darkness
- Then they must press F8 until a code appeared
- Players can enter the code in-game to receive the following items: B-Box and World Best Set
27 March 2014[]
- Added Cyclone, Lingling and Duration Extender into Code Box
- Released Shadow Conqueror set
13 March 2014[]
27 February 2014[]
- Add new Weapon recipe for SKULL Series, BALROG Series and JANUS Series
- Resold JANUS-5 and Double-barreled shotgun
- Held Double-barreled shotgun upgrade event
- Held Fortune Cookie event
13 February 2014[]
- Rebooted Zombie Shelter: Coop
- Released Desert Plants
- Added Survival Tools Package
- Adopted Machete, Crowbar and Claw Hammer
- Held B-Box Giveaway event
- Held Valentine event
- Held Golden bell giveaway event
28 January 2014[]
- Re:boot Zombie Scenario
- Released Envy Mask
- Recruited Choi Ji Yoon (Limited Edition) and Michaela (Limited Edition)
- Added Gae Bolg, MP7 Unicorn, and Horse Axe
- Sold Decoders bundles
- Resold SKULL-4
- Added Dual Infinity to shop
- Resold Combat Knife and held Combat Knife upgrade event
- Held Kite event
- Held Bingo Event and Letter Collecting Event
- Log in specific days to receive Fortune bag
16 January 2014[]
- Released Shoreline
9 January 2014[]
- Patched Zombie 4: Darkness
- Adopted M2 Browning
- Released Dark City
- Kill the zombies at the end of the round to get Zombie 4: Darkness supply box or key
- Held Coin Event
2013[]
19 December 2013[]
- Adopted M1887 Xmas
- Added Advanced Enhancement Kit and Craft Item Duffel Bag
- Resold BALROG-I and BALROG-IX
- Resold ARX-160 for Weapon Enhancement
- Added new medals: [Enhancer] & [Mother of Success]
- Re:booted Craft system
- Added Zombie 4: Darkness supply box
- Held Christmas event
05 December 2013[]
21 November 2013[]
- Adopted Groza
- Clear Zombie Shelter: Coop/Team Match to receive Soy's SD Zombie Maker
- Held Golden bell giveaway event
- Held B-Box giveaway event
- Updated Battlefield Supply
14 November 2013[]
- Patched New Zombie Shelter
- Released Dead City
07 November 2013[]
- Adopted JANUS-1
- Added new medals: [Last Survivor] & [Unauthorized Dismantle]
- Updated Battlefield Supply
- Held Time Bomb event
24 October 2013[]
- Introduced Dedicated Server
- Reform Medal system
- Added new medals for Zombie Scenario: Season 3, Encounter and Beast mode
- Clear all Zombie Scenario: Season 3 chapters, Encounter and Conspiracy to receive Lightning LZ-1
- Log in to receive Pumpkin Grenade and costumes
- Added Drill and G11 Gold into Code Box
- Updated Battlefield Supply
10 October 2013[]
- Invented JANUS-7
- Discovered Illusion
- Held Baseball event
- Updated Battlefield Supply
- Play 30 minutes to get Illusion Key
26 September 2013[]
- Recruited Walter and Carlito
- Resold HK G11 for Weapon Enhancement
- Held Golden bell event
- Updated Battlefield Supply
12 September 2013[]
- Adopted JANUS-5
- Released Conspiracy
- Held Bingo Event
- Added Compound Bow and UTS-15 Pink Gold to Bingo prizes
- Introduced B-Box
- Updated Battlefield Supply
29 August 2013[]
13 August 2013[]
- Adopted Tactical Knife
- Held Tactical Knife Upgrade event
- Held Mosquitoes Eradication event
- Updated Battlefield Supply
- Resold Christmas Edition Weapons
01 August 2013[]
- Adopted SKULL-6
- Released Encounter
- Held Big Head Event
- Updated Battlefield Supply
25 July 2013[]
- Resold BALROG-I, BALROG-V, BALROG-VII and BALROG-IX
18 July 2013[]
- Adopted Battle Weapons
- Released Joker Character
- Added [Polar Head] and [Penguin Doll] costumes
- Updated Battlefield Supply
04 July 2013[]
- Patched Beast mode
- Updated Custom Start menu
- Released Cold Fear
- Adopted Leviathan
- Updated Battlefield Supply
27 June 2013[]
- Adopted SKULL-8
- Held Bingo Event
- Added Plasma Gun and Beam Sword into Bingo Event prizes
- Added Green Dragon Blade into Coded Box
20 June 2013[]
- Adopted AWP-Z
- Released Hitchhiking
- Held Ice event
04 June 2013[]
- Held SPAS-12 Cobra Upgrade event
- Added Weekly Ranking system
30 May 2013[]
- Introduced AFK Host Auto-kick system
- Adopted AK-74U
- Added [Squirrel] costumes
- Updated Battlefield Supply
14 May 2013[]
- Adopted BALROG-XI
- Held Dual Infinity Upgrade event
- Updated Battlefield Supply
- Held Code A Decoder Giveaway event
02 May 2013[]
- Resold Cart Rider Best Friend Package
- Added [Kart] costumes
- Clear all Zombie Scenario maps to get Lightning HZ-1
23 April 2013[]
- Released Panic Room
- Clear Panic Room to receive Jiang Shi (permanent)
- Added [Panda] costumes
- Introduced Origin Weapons License
- Added Needler and King Cobra Gold into Coded Box
- Updated Battlefield Supply
11 April 2013[]
- Adopted SKULL-4
- Launched Facebook page
04 April 2013[]
- Introduced Baseball event
- Sold SKULL-4 Reservation Ticket
28 March 2013[]
- Released Lusty Rose
- Introduced M16A1 Veteran
- Added [E], AT4-CS and Lightning AR-2 sprays
- Held Seed event
- Held Reversed Map event
- Updated Battlefield Supply
14 March 2013[]
- Released Santorini
- Adopted BALROG-III
- Introduced Code B Decoder
- Added FG-Launcher and MG36 Gold into Coded Box
- Collect 100 special points to receive Lightning LZ-1 permanent
- Log in to receive Heart bomb and Heart spray
- Updated Battlefield Supply
26 February 2013[]
14 February 2013[]
- Held Triple-barreled shotgun Upgrade event
07 February 2013[]
- Adopted UMP45 Snake
- Added Serpent Blade and Ripper
- Held Bingo Event and Stingray Kite events
- Introduced [Golden Armor] costumes
- Added [Rescue Elite] medal
- Updated Battlefield Supply
31 January 2013[]
17 January 2013[]
- Patched Zombie Shelter
- Recruited Alice (Limited Edition) and Yuri (Limited Edition)
- Released City of Damned
03 January 2013[]
- Patched Rush Battle
- Adopted HK G11
- Released Urban Assault
- Updated Battlefield Supply
2012[]
20 December 2012[]
- Added [Christmas] costumes
- Log in to receive Christmas hat and spray
- Adopted MG36 Christmas Edition
- Resold MG3, M134 Minigun and Barrett M95 Christmas Editions
- Updated Battlefield Supply
06 December 2012[]
22 November 2012[]
- Held Lucky Coin event
- Added Thunderbolt and Double-barreled shotgun Gold into Coded Box
- Released [Last Soldier] & [Infecter] medals
13 November 2012[]
- Introduced Comrade
- Adopted M249 Veteran
08 November 2012[]
- Adopted UTS-15
- Held Kriss Super V Upgrade event
25 October 2012[]
11 October 2012[]
- Adopted M16A1
- Held Silver bell and Golden bell events
- Resold Parkerhale M82 and PKM for Weapon Enhancement
25 September 2012[]
- Released Contact
- Adopted BALROG-V
- Added Volcano, P90 Lapin and Cannon into Coded Box
- Held Full Moon event
13 September 2012[]
- Introduced costumes
- Added Dust Zero and Angel City to other modes
30 August 2012[]
- Released Angel City
- Adopted King Cobra
- Added [Firefighter], [Bot Zombie Master] and [Reliable Assistant] medals
16 August 2012[]
- Held SL8 and Combat knife Upgrade events
09 August 2012[]
- Adopted Lightning LZ-1
- Adopted Lightning HZ-1
- Released Poisoning
- Held Seed event
02 August 2012[]
26 July 2012[]
- Held Mosquitoes event
- Held M134 Minigun Upgrade event
12 July 2012[]
- Released Angra Nest
- Adopted BALROG-VII
28 June 2012[]
- Patched Z-VIRUS
- Released Forbidden
- Unleashed Venom Guard and Sting Finger
- Adopted M32 MGL
- Added Ethereal and Wild Wing to Bingo Event
- Added Lightning AR-2 and M14 EBR into Coded Box
14 June 2012[]
31 May 2012[]
- Adopted M249 Camouflage
- Released level-restrict weapons
- Introduced Weapon Enhancement
- Added Normal Enhancement Kit and Anti-Enhancement Material
- Added Lucky Gunman
- Resold M14 EBR and XM2010
17 May 2012[]
- Added Soy's SD Zombie Maker
- Adopted Parkerhale M82
03 May 2012[]
- Added [Phoenix] and [Weapon Specialist] medals
- Added Shooting Star and KSG-12 Gold into Coded Box
- Held Dual Infinity Upgrade event
- Adopted Cart Rider Best Friend Package
19 April 2012[]
- Adopted SKULL-11
- Released Decoy
- Resold MG36, M79 Saw off and Wedung
05 April 2012[]
- Adopted Tomahawk
- Added Gallery, Inferno and Checkmate to Gun Deathmatch
22 March 2012[]
- Patched Gun Deathmatch
- Recruited Raven and Michaela
08 March 2012[]
- Added Avalanche and StG 44 Gold into Coded Box
- Held Silver bell and Golden bell events
23 February 2012[]
19 January 2012[]
- Added AWP and M24 into Coded Box
- Recruited Jennifer (Army) and Natasha (casual)
- Held Letter Collecting Event
- Added Black Dragon Cannon and TMP Dragon as the main prizes
12 January 2012[]
- Adopted SKULL-3
- Patched Zombie Escape
- Released Blood Castle