Here's a rundown of some of the major updates in today's patch!
Please see here[forum.nexon.com] for the Decoder rates.

• Try The Counter Exchange CP Event! (11/6 – 11/27)

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Earn CP (CSN Event Points) by completing missions during the event.

1st CP Challenge! Play Event (11/13 - 11/27)

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You can obtain additional CP by playing various challenges! 

2nd CP Challenge! Play Event (11/20 - 11/27)

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You can obtain additional CP by playing various challenges! 

Random Rules Zombie Classic Event (11/13 – 11/27)

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Enjoy Zombie Classic in a whole new way: with the rules changing every round during the event!

Random Rules Zombie Hero Event (11/13 – 11/27)

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Enjoy Zombie Hero in a whole new way: with the rules changing every round during the event!

Zombie Scenario New Map Rescue: Isolated City Event (11/13 – 11/27)

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Try the new Zombie Scenario map and earn great rewards during the event!

Plus Decoder Promotion (11/13 – 11/27)

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Plus Decoder Weapon Guaranteed Giveaway (11/13 – 11/27)

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• Rescue: Isolated City
  
  • A signal is detected, requesting rescue for the survivors who fled to a temporary shelter from the zombies swarming the city. In response, the government mobilized their special rescue strategy unit and issued a mission to save the survivors by safely escorting an aid vehicle to the temporary shelter.
    
  • You can find detailed information in [Zombie Scenario Season 9 Supplement Preview].

Earn CP (CSN Event Points) by completing missions during the event.

• How to Participate-1
  
  • Earn 1 CP for every 15 Kill Points from zombie kills or assists as a human, or infections as a zombie (except bots) in Zombie Mode (up to 7 CP per day).
    
  • Earn 1 CP for every 45 Kill Points from zombie kills or assists as a human, or infections as a zombie (bots only) in Zombie Mode (up to 2 CP per day).
    
  • Earn 1 CP for every session clear after scoring 100 Kill Points in Zombie Scenario mode on Hard or higher (up to 8 CP per day)
    
  • Earn 1 CP for every 20 minutes of in-game playtime (up to 2 CP per day)

• How to Participate-2
  
  • Earn 1 CP when you complete 2 of the following missions (up to 1 CP per day):
    
  • Click on the Event Missions tab to check your Event Missions.
    
  • Purchase a Point Transcendence Decoder or a Point Class Decoder from the Shop.
    
  • Go on an Exploration once.

• How to Earn Kill Points
  
  • Zombie Kills as a Human: 3 Points
    
  • Zombie Assists as a Human: 1 Point
    
  • Human Infections as a Zombie: 4 Points
    
  • Human Infection Assists as a Zombie: 0 Points

• Notice
  
  • You can earn up to 10 CP a day via the mission from How to Participate-1.
    
  • You can earn up to 60 CP per account via the mission from How to Participate-2.
    
  • Daily Missions reset every day at midnight.
    
  • You can earn playtime in all modes, including Studio Mode.
    
  • Besides playtime, in-game missions do not count towards participation in Studio Mode.
    
  • You can only participate in rooms with 3 or more players.
    
  • Autohunt kills are excluded regardless of mode.
    
  • Eligible Zombie Modes: Zombie Classic / Zombie Mutant / Zombie Hero / Zombie Z / Zombie Evolution
    
  • Excluded Zombie Scenario Maps: Double Gate / Lost City / Survival: Trap / Survival: Groundwater / Pursuit: Chaos
    
  • You must play for at least 5 minutes to get credit for Zombie Scenario mode missions.
    
  • All CP will be removed during the 11/27 maintenance.

• Special Rewards
  
  • This is a special category of items that have difficult unlock requirements.
    
  • Unlock requirements are based on the total CP (CSN Event Points) each item requires.
    
  • Price (CP): 20
    
  • Unlock Requirements (Total CP): 180
    
  • Special Rewards: Gold Weapon Selection Box
    
  • Period/Quantity: x1
    
  • Exchange Limit per Account: 1 time
    
  • Daily Exchange Limit: 1 time

• Seasonal Rewards
  
  • This is a category of items that are part of a specific season.
    
  • Daily Exchange Limit: none
    
    Price (CP)

    Total CP Required

    Seasonal Rewards

    Exchange Limits

    5

    120

    Ceremonial Headpiece

    1

    5

    120

    Ceremonial Shield

    1

    5

    120

    Ceremonial Sash

    1

    5

    120

    200 Weapon Enhancement EXP Coupon

    1

    2

    130

    1,000 Mileage Coupon

    5

    8

    160

    Transcendence Decoder

    7

    6

    150

    Class Decoder

    10

• Normal Rewards
  
  • This is a category of items that can be traded without unlocking them beforehand.
    
  • Event Decoders can be used until midnight of the day they were obtained and are removed afterwards.
    
    Price (CP)

    Normal Rewards

    Exchange Limits

    1

    Lucky Gunslinger

    -

    2

    Satellite Mine (1 Day)

    1

    2

    Lightning Fury (1 Day)

    1

    2

    Failnaught (1 Day)

    1

    2

    Whip Sword (1 Day)

    1

    2

    Roy (1 Day)

    1

    2

    Romy (1 Day)

    1

    2

    Ismael (1 Day)

    1

    2

    Ethan (1 Day)

    1

    3

    Rare Decoder

    3

    3

    Unique Decoder

    1

    6

    Unique Premium Decoder

    1

    4

    Event Decoder

    1

    1

    Grade 3 Parts Reward Box

    -

    2

    Grade 4 Parts Reward Box

    2

    5

    Grade 5 Parts Reward Box

    2

    3

    Random -1 Dehancement Material

    3

    3

    50 Weapon Enhancement EXP Coupon

    3

    3

    100 Weapon Enhancement EXP Coupon

    3

    1

    Zombie Scenario Add-On Rate Box

    -

    2

    Zombie Damage Meter (1 Day)

    -

    1

    Exploration Success Rate-Up +10%

    -

    2

    Exploration Success Rate-Up +20%

    -

    1

    Exploration Level Enhancement EXP Coupon

    -

    2

    2x EXP UP

    -

You can obtain additional CP by playing various challenges! 

• How to Participate
  
  • Reach 10 hours of total playtime: 8 CP (Up to 8 CP)
    
  • Complete 100 rounds in modes with rounds: 8 CP (Up to 8 CP)
    
  • Win 20 games in modes with win/loss: 8 CP (Up to 8 CP)
    
  • Try out 7 different maps for at least 20 min each in any game mode: 8 CP (Up to 8 CP)
    
  • Score 10 Human Victories as a Hero in Zombie Evolution/Zombie Hero/Zombie Z: 8 CP (Up to 8 CP)
    
  • Clear a session in Zombie Scenario mode [Rescue: Isolated City]: 5 CP (Up to 10 CP)

• Misc.
  
  • The clear-a-session mission in Rescue: Isolated City can be cleared twice. The other missions can only be cleared once per account.
    
  • Regardless of how you obtain your points, you can earn up to 50 CP during the event period.
    
  • You can only participate in rooms with 3 or more players.
    
  • You must play for at least 5 minutes to get credit for Zombie Scenario mode missions.
    
  • You can participate in all modes, including Studio Mode.
    
  • Obtained CP will be removed during maintenance on 11/27.
    
  • Zombie Scenario/Human Scenario rounds are also counted for Play Missions that require modes with rounds.
    
  • The condition for winning in modes with win/loss refers to seeing the victory shown on the session completion screen.

You can obtain additional CP by playing various challenges! 

• How to Participate
  
  • Play for 5 hours with a Family member: 12 CP (Up to 12 CP)
    
  • Earn 30 headshots against players (excluding bots): 12 CP (Up to 12 CP)
    
  • Try out 5 different modes for at least 30 minutes each: 12 CP (Up to 12 CP)
    
  • Win 30 rounds as a Human in Zombie Evolution/Zombie Hero/Zombie Z: 12 CP (Up to 12 CP)
    
  • Score 20 different player class kills regardless of whether they are human/zombie (excluding bots): 12 CP (Up to 12 CP)

• Misc.
  
  • Each account can only participate once per mission.
    
  • Regardless of how you obtain points, you can earn up to 60 CP over the event period.
    
  • You can only participate in rooms with 3 or more players.
    
  • Regarding the condition to play with a Family member, only one Family member is required as long as there are at least 3 players in the room.
    
  • You can participate in all modes, including Studio Mode.
    
  • Obtained CP will be removed during maintenance on 11/27.

Enjoy Zombie Classic in a whole new way: with the rules changing every round during the event!

• Random Rules Zombie Classic Maps: Italy / Assault / Dust / Estate
  
• Random Rules (Classic)
  
  • Zombie Fireball  
    
  • United We Stand  
    
  • Too Close for Comfort  
    
  • Precision Shooting  
    
  • Explosive Results 
    
  • Aerial Bombardment  
    
  • Low Profile  
    
  • Give 'em the Bird  
    
  • Bullet Storm  
    
  • Double Jump  
    
  • Bunny Hop  
    
  • Revenant  
    
  • Special Delivery  
    
  • Tunnel Vision  
    
  • Steel Rain  
    
  • Burning Time  
    
  • Standard Issue  
    
  • Structural Decay  
    
  • Second Chances  
    
  • Packing Heat  
    
  • Headhunter  
    
  • Turrets Syndrome  
    
  • Random Weapon  
    
  • Big Head Mode  
    
  • Moon Bounce  
    
  • Bandwagon  
    
  • Critical Strike  
    
  • Moon Bounce  
    
  • Rule of Threes 
    
  • In This Together  
    
  • Bang for the Buck  
    
  • Furiously Fast 
    
  • Out With a Bang  
    
  • Hardcore  
    
  • Change of Heart  
    
  • Marksman  
    
  • Long-Distance Relationship  
    
  • Run For Your Life  
    
  • Spectral Assault  
    
  • I'm a Surgeon  
    
  • Creepy Crawlies  
    
  • Last Shot  
    
  • Backstabbers  
    
  • Bloody Bullets  
    
  • Shockwave  
    
  • Rifleman  
    
  • Reliable Weapons  
    
  • Social Behavior 

• Misc.
  
  • The rules are announced three seconds before the start of each round.
    
  • You can check the information about the current rules again by pressing the 'L' key.
    
  • The Zombie Classic Random Rules were prepared based on weapon usage from New Classic (Zombie) or New Classic (Recommended).
    
  • Certain rules that can't be used in Zombie Classic have been deleted or changed accordingly for Classic.

Enjoy Zombie Hero in a whole new way: with the rules changing every round during the event!

• Random Rules Zombie Hero Maps: Italy / Assault / Vertigo
  
• Random Rules
  
  • Zombie Fireball  
    
  • Counter Strike War Z 
    
  • Precision Shooting  
    
  • Explosive Results 
    
  • Aerial Bombardment  
    
  • Last Stand  
    
  • Big Head Mode  
    
  • Creepy Crawlies  
    
  • Bandwagon  
    
  • Critical Strike  
    
  • Revenant  
    
  • Bloody Bullets  
    
  • Shockwave  
    
  • In This Together  
    
  • Bang for the Buck  
    
  • Reliable Weapons  
    
  • Skill Master 
    
  • Standard Issue  
    
  • Hardcore  
    
  • Packing Heat  
    
  • Applied Engineering  
    
  • Run For Your Life  
    
  • Spectral Assault  
    
  • I'm a Surgeon  
    
  • Double Jump  
    
  • Last Shot  
    
  • Backstabbers  
    
  • Bad Touch  
    
  • Special Delivery  
    
  • Chaotic  
    
  • Rifleman  
    
  • I Am Legend  
    
  • Burning Time  
    
  • Biochemical Attack  
    
  • Out With a Bang  
    
  • Girls' Generation  
    
  • Marksman  
    
  • Headhunter  
    
  • Random Weapon  
    
  • Give 'em the Bird  
    
  • Bullet Storm  
    
  • We Are Venom  
    
  • Bunny Hop  
    
  • Zombie's Delight  
    
  • Moon Bounce  
    
  • Rule of Threes 
    
  • Tunnel Vision  
    
  • Steel Rain  
    
  • Good Old Days  
    
  • Furiously Fast  
    
  • Social Behavior 

• Misc.
  
  • The rules are announced three seconds before the start of each round.
    
  • You can check the information about the current rules again by pressing the 'L' key.

Try the new Zombie Scenario map and earn great rewards during the event!

• Daily Mission
  
  • Get Event Decoder x1 each time you complete the aid convoy mission on 'Normal' or higher difficulty in Zombie Scenario Season 9 Supplement Rescue: Isolated City. (Once daily)

• Cumulative Rewards
  
  • Get Weapon Paint Decoder x1 when you get a total of Event Decoder x3 through the daily mission.
    
  • Get Weapon Paint Decoder x2 when you get a total of Event Decoder x5 through the daily mission.
    
  • Get Weapon Paint Decoder x3 when you get a total of Event Decoder x10 through the daily mission.

• Misc.
  
  • You can only participate in rooms with 3 or more players.
    
  • You must play for at least 5 minutes to get credit for Zombie Scenario mode missions.
    
  • Autohunt kills are excluded from the event.
    
  • Event Decoders can be used until midnight of the day they were obtained and are removed afterwards.

The following weapons will make a special appearance from the Plus Decoder during the event.

• Plus Decoder
  
  • Holy Sword Divine Order: 0.15%
    
  • Hellhound: 0.15%
    
  • Lightning Fury: 0.15%
    
  • Cyclops: 0.15%
    
  • Cousteau: 0.15%
    
  • Tyrant's Mace: 0.15%

You can select one of the permanent weapons of your choice below based on the number of Plus Decoders used during the event.

• Every time you earn 300 Guaranteed Points, you can obtain the following weapons.
  
  • Holy Sword Divine Order
    
  • Hellhound
    
  • Lightning Fury
    
  • Cyclops
    
  • Cousteau
    
  • Tyrant's Mace
    (1 Guaranteed Point is earned each time you use 1 Plus Decoder.)