Counter Strike Online Wiki
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South Korea
CSO


NOTICE
Any updates placed here in advance are speculative and subject to change.
Do not take them as absolute truth until the update in question comes out.
See updates from 2016-2019: Events (South Korea)/2016-2019

Weapons
  • AK-47 Autumn Fox
  • XM1014 Golden Rose
  • Dread Nova Sigma
  • Battle Falcon
  • Battle KH-2002
  • Battle Norinco Type 86-S
  • Battle PP-2000
  • Battle Uzi
  • MP7A1 HQ
  • SCAR HQ
  • XM8 HQ
  • Iron Fan +6
  • Attack M950 +6
  • SG550 Veteran
  • M4A1 + Grenade Launcher
  • Soccer Zombie Grenade
Maps
  • River/Subway (Zombie Scenario Season 1 Survival)
  • Snow Mart (Zombie Shelter)
Reworked maps

14 July 2022

  • Divine Titan
  • Zombie Scenario 8 Chapter 2

30 June 2022

16 June 2022

Death eater.png

2 June 2022

19 May 2022

Kai icon.png
Rin.png

5 May 2022

Dm castleland cso.png

21 April 2022

Plain sword.png

14 April 2022

  • Re-Ajusted Event Box rewards from Event reward boxes are pouring out on weekdays and weekends! event
  • Fixed some bugs

7 April 2022


31 March 2022

  • Fiexed various bugs
  • Re-Added Hardware Acceleration setting

24 March 2022

Holyswordm.png

10 March 2022

  • Held Random Rule Zombie Hero
  • Held Doubled Season Pass Badge and Play event for the New Semester events
  • Resold Satellite Mine
  • Improved Petrol Boomer and Batista performance
    • Added Part System to both weapons
    • Increased damage in Zombie and Scenario modes
    • Updated their Zombie Z levels

24 February 2022

Pop star alin.png
Agent ritsuka.png

10 February 2022

27 January 2022

20 January 2022

Quantum horizon.png
Psychic sizer.png

6 January 2022

  • Improved SKULL-T9 performance
    • Increased Range, B mode damage, Rate of Fire and portability
    • Readjusted its Zombie Z level
  • Fixed some bugs

2022

30 December 2021

Skullt9.png

16 December 2021

Mechasaurus mk4.png
Mechasaurus mk3.png
Mechasaurus mk2.png
Mechasaurus mk1.png

2 December 2021

18 November 2021

Roy icon.png
Romi icon.png

11 November 2021

4 November 2021

21 October 2021

Laevateinn.png

7 October 2021

  • Held Random Rule Zombie Hero
  • Held Autumn Leaves Box Collection event
  • Added Transcendence Enhanced Weapon Selection Box
  • Added 50 EXP Weapon Enhancement EXP Coupon

30 September 2021

  • Improved Failnaught perfomance
  • Added Class Voice Emphasis to Audio Options
  • Fixed various bugs

16 September 2021

Hunterbow.png
Buffclass21s3ct.png
Buffclass21s3tr.png
  • Released Electron
  • Added Class Change feature: Press [H] to change your class next round
  • Held Fireworks Crafting Festival! and Gather Sky Lanterns and Get Rewards! events
  • Held Mileage Auction
  • Adopted Failnaught
  • Recruited Ishmael and Ethan
  • Fixed various bugs

9 September 2021

  • Held Full Moon event
    • Hunter Killer X-7 (Gun Boost 6, Rage Down 6) as the top prize

26 August 2021

Gran bird cannon.png
Buffsg552ex.png

12 August 2021

29 July 2021

Zs deadmall1 cso.png
Researcher journal 7 tracking.png
  • Released Lowdown
  • Updated Studio Play:
    • Added Level and Difficulty rules
    • Added Cutscene Camera device
    • Expanded Ranking Board function
  • Released Researcher Journal #7: Tracking
  • Held Studio Zombie Scenario Contest
  • Improved info accessibility and user convenience
  • Rebalanced Zombie Z Season 2
  • Updated Battlefield Supply
  • Fixed various bugs

15 July 2021

Dgaxe.png
Guillotineex.png

8 July 2021

6 July 2021

1 July 2021

Mirage icon.png
Anemone icon.png

17 June 2021

3 June 2021

Buffm2.png

20 May 2021

Jetgunex.png

6 May 2021

Elementral tracker.png
Lightning tracker.png
Fire tracker.png
Wind tracker.png
  • Held 2021 Season 9: Fantasy World
    • Reorganized some features
  • Held League Season 5
  • Updated zombie content
    • Buffed zombies in rooms with zombie restrictions
    • Zombie restriction quota was increased to 4
    • Buffed further zombies for Normal Zombie Only restriction
    • Updated Karma
    • Balanced zombie meta
    • Adjusted weapon levels in Zombie Z
  • Improved Inventory system
  • Updated Battlefield Supply
  • Fixed various bugs

22 April 2021

Summonknifeex.png

8 April 2021

Dragon knight kyrix.png
High elf natasha.png

25 March 2021

Sbmine.png
  • Replaced Blood Dripper with Thunder Ghost Walker in Transcendence Decoder
  • Adopted Satellite Mine
  • Held Seed event
  • Held Zombie Hero Random Rule event
  • Recovered an add-on item that was used irrespective of the intent due to a system error
  • Modified the maximum enhancement value of M95 Christmas damage from 1 to 2.
  • Modified the maximum enhancement value of the VICTORY series weapon enhancement items (Damage, Accuracy, Recoil, Weight, Continuous fire, and Number of rounds) to 5.

11 March 2021

25 February 2021

11 February 2021

4 February 2021

Winggun.png
Crossbowex21.png
Zs biolabs1 cso.png

14 January 2021

Bearfury mk3.png
Bearfury mk2.png
Bearfury mk1.png

7 January 2021

2020

31 December 2020

  • Held New Year event
  • Gave away Decoders and Mileage

23 December 2020

Cs italy xmas cso.png

10 December 2020

Leader soi icon.png
Super solider jennifer icon.png
Draugr icon.png

26 November 2020

12 November 2020

Scenario tx.png
Demonic scarlet rose.png

29 October 2020

Buffclass20s3tr icon.png
Buffclass20s3ct icon.png

15 October 2020

Gungnir sigma.png
Dualswordm leather.png

24 September 2020

Plasmariflemk1.png
Plasmariflemk2.png
Plasmariflemk3.png
Plasmariflemk4.png
Buffng7.png

17 September 2020

3 September 2020

Magicknife.png
  • Adopted Miracle Prism Sword
  • Held Zombie Virus Overcome event
  • Held "Wait ! I'll go get a special weapon" event

20 August 2020

Laserfistex.png

6 August 2020

Cannonexgoldnb.png

23 July 2020

Zombie5.png

9 July 2020

Voidpistol.png

25 June 2020

Blade Frostbreaker.png

11 June 2020

Sgmissile.png
Holyswordnb.png

28 May 2020

Scar oz-A.png
Scar oz-b.png
Scar oz-c.png
Scar oz-D.png

11 May 2020

Zweaponboxa.png
Zweaponboxb.png

28 April 2020

Pianogun.png

16 April 2020

Luckybox5.png

2 April 2020

Trainer erica.png
Instructor gerard.png

19 March 2020

Growitem4.png

5 March 2020

Lightning fury.png

20 February 2020

Magicsg.png

6 February 2020

Sgmissilem.png

21 January 2020

Svdex.png

9 January 2020

Heaven scorcher.png
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