What can you do as a free member?

Member benefits illustration

Create your free account today and unlock all our premium features and tools to enhance your gaming experience.

Member benefits illustration

Create your free account today and save articles to your watchlist and get notified when they're updated with new information.

Member benefits illustration

Create your free account today and save your favorite games for quick access later, synced across all your devices.

Member benefits illustration

By creating a Game8 account and logging in, you'll receive instant notifications when someone replies to your posts.

Comment rating feature illustration

By creating a Game8 account and logging in, you can make use of convenient features in the comments section, such as rating and sorting comments.

Premium archive feature illustration

By creating a Game8 account and logging in, you can access Premium articles that are exclusively available to members.

Site Interface

Guest
Free Member
Article Watchlist
Game Bookmarks
Cross-device Sync
Light/Dark Theme Toggle
User Profiles
Direct Feedback
Comment Rating

Game Tools

Guest
Free Member
Interactive Map Access
Interactive Map Pins
Interactive Map Comments
Interactive Map Pins Cross-Device
Check List
Event Choice Checker
Deck Builder Cross-Device
Message Board Notification
Message Board Cross-Device
Build Planner
Stat Calculator
Diagnostic Tool
Weapon/Armor Wishlist

Want more information?Learn more

Chaos Zero Nightmare (CZN)

Zero System Guide

Add to Watchlist

S1: Forbidden Catalyst | Nebula Distortion | The Great Rift
All Banners | Upcoming Banners
New Characters: Chizuru | Itsuku
Upcoming Characters: Sereniel
Join Our Tier List Contest!
┗ Tier Lists: Character | Partner | Cards

Chaos Zero Nightmare - Zero System Guide Top Banner

Zero System is a separate game mode from Chaos Manifestation in Chaos Zero Nightmare (CZN) where players tackle harder versions of Chaos called Codex but with more rewards and higher save data values. Learn more about how Zero System works, tips, rewards, duration and how to unlock it here!

Rei Attention PartialAttention! We are currently rushing out guides as quickly as possible. More details will be added here soon!
Sign up or Log in and select Add to Watchlist under the page's title to be notified of any updates!

Zero System New Features

Dimensional Tunnel Events Added to All Chaos Areas

The Dimensional Tunnel event, which was exclusive to Laboratory 0, can now be encountered in any Chaos Area within Zero System. The new update also allows you to choose if you want to encounter Dimensional Tunnels during runs.

It is imporant to note that Save Data obtained through these new Codices will be treated as Season Save Data, identified by a Season Symbol and will allow you to use them for any in-game content. This will enable you to obtain Season Save Data from your preferred Chaos Area, instead of being limited to Laboratory 0.

Zero System Explained




Harder Chaos Manifestation

Chaos Zero Nightmare - Harder Chaos
Zero System is the same as Chaos Manifestation but the game generates a chaos for you called Codex which has randomized penalties that makes the run harder instead of a static difficulty increase.

Exploration records are still counted after each run for that chaos and will give you the respective rewards for it. Therefore, it is better to play Zero System insead of Chaos Manifestation once you unlock it.

Higher Save Data Value

Chaos Zero Nightmare - Very High Save Data
Zero System has a much higher save data value compared to Chaos Manifestation letting you save more powerful cards and equipments after a run.

Saved Data and Data Value Guide

Upgrades to Strengthen Future Runs

Chaos Zero Nightmare - Upgrade Zero System
As you keep playing Zero System, you will earn a currency called Chaos Orbs. After each run, you can spend it on upgrades such as stat increase, event probability increase and powerful effects such as increase spawn rate of rare species or gain bonus effects at the start of all your runs.

Do note that upgrades in Zero System do not carry over in Chaos Manifestation.

Gain Rewards After Every Run

Chaos Zero Nightmare - Chaos Matrix
You also gain various rewards after reaching a level based on the accumulated chaos orbs you have obtained. Chaos Orbs you spent on upgrades will not reduce your level.

Zero System Tips




Start With the Easiest Codex

Chaos Zero Nightmare - Increasing Difficulty
You start at difficulty level 5 after unlocking Zero System. This limits you to codex levels that range from 40 to 50. Completing a run will give you three similar chaos options with higher codex level than the previous one but never lower.

Pick Codex With Penalties That Least Affect Your Team

Chaos Zero Nightmare - Chaos Three Choices
Before starting a run, make sure to pick a codex with penalties that has the least impact in your party. For example, if you have a dedicated healer like Mika, you can aim for the Anxiety penalty that disables the rest option in campfires which you do not need when she is in the party.

List of All Codex Penalties

Penalty
Name
Description Chaos Orb Increase
Tyrant 1 Elite and Boss Area monsters' Attack and max Health increase by 10% 10%
Tyrant 2 Elite and Boss Area monsters' Attack and max Health increase by 20% 20%
Tyrant 3 Elite and Boss Area monsters' Attack and max Health increase by 30% 30%
Tyrant 4 Elite and Boss Area monsters' Attack and max Health increase by 40% 40%
Elite 1 2 Elite Spots added 10%
Elite 2 4 Elite Spots added 20%
Elite 3 6 Elite Spots added 30%
Elite 4 8 Elite Spots added 40%
Plague 1 Max Health decreases by 20% 10%
Plague 2 Max Health decreases by 30% 20%
Plague 3 Max Health decreases by 40% 30%
Plague 4 Max Health decreases by 50% 40%
Loss 1 Credits obtained from battle spots decrease by 20% 10%
Loss 2 Credits obtained from battle spots decrease by 40% 20%
Loss 3 Credits obtained from battle spots decrease by 60% 30%
Loss 4 Credits obtained from battle spots decrease by 80% 40%
Gangrene 1 Max Health decreases by 1% at the start of each turn 10%
Gangrene 2 Max Health decreases by 2% at the start of each turn 20%
Gangrene 3 Max Health decreases by 3% at the start of each turn 30%
Rage 1 Monsters gain 1 fury every 3 turns 10%
Rage 2 Monsters gain 2 fury every 3 turns 20%
Harden 1 Monsters gain 1 resolve every 3 turns 20%
Harden 2 Monsters gain 2 resolve every 3 turns 40%
Revenge 1 Each time a monster dies, other monsters gain 1 fury 10%
Revenge 2 Each time a monster dies, other monsters gain 2 fury 20%
Neglect 1 Discard 1 card randomly at the start of each turn 50%
Anxiety 1 Cannot rest in safe zones 50%

When creating a codex, it has a chance of having 1-3 penalties based on rarity with uncommon having 1 penalty and legendary with 3 penalties in total. Each penalty has an equal chance of 3.7037% to show up in a codex.

Fight Rare Species For More Chaos Orbs

Chaos Zero Nightmare - Rare Species
When looking at the map, you will notice battle nodes that has a purple flaming icon beside it. The enemies are considered rare species that has a bit higher health and attack plus an extra passive that buffs the enemy or debuffs your party. If you complete the fight, you will be rewarded with more chaos orbs at the end of your run.

Use Chaos Orbs For Upgrades After a Run

Chaos Zero Nightmare - Starting Boon
Make sure to spend all chaos orbs you obtained after a successful run on upgrades to get powerful effects. For example, you can get an upgrade that puts you in an event at the start of all your runs that provides beneficial effects on your team such as increase max health, card removal or random equipment.

Zero System Rewards

Crystals, Prism Lens and Various Growth Materials

Total Rewards
Unit Unit x960000

Level Rewards Requirement
1
Unit Unit x80000
Chaos Orbs x15
2 Chaos Orbs x15
3 Chaos Orbs x15
4 Chaos Orbs x15
5 Chaos Orbs x15
6
Unit Unit x80000
Chaos Orbs x15
7 Chaos Orbs x15
8 Chaos Orbs x15
9 Chaos Orbs x15
10 Chaos Orbs x15

Zero System Chaos Matrix Duration

Ends on January 14, 2026 at 02:00 AM (UTC)

Zero System Duration
Start Date October 22, 2025
End Date January 14, 2026

Chaos Matrix, is a seasonal event for Zero System where players collect Chaos Orbs to raise their Chaos Matrix Level to earn rewards. It starts on October 22, 2025 and ends on January 14, 2026 for a total of 84 days.

How to Unlock Zero System

Unlocked on Captain Level 40

Zero System becomes available after reaching Captain Level 40, Expert Captain. Once you reach this level, the game will force you to a tutorial for Zero System. Simply go back to the main menu, click Chaos on the right side of the screen and select Zero System beside Chaos Manifestation.

Chaos Zero Nightmare (CZN) Related Guides

Chaos Manifestation Partial

Chaos Mode Explained

Chaos Game Modes

Chaos Manifestation Zero System

All Chaos Areas

The Blue Pot Twin Star's Shadow
City of Mist Swamp of Judgement
The Foretold Ruin -

All Seasonal Chaos Areas

Laboratory 0 -

Author

    Please participate in our site
    improvement survey
    12/2025
    Would you assist in
    improving Game8's site?
    ×
    This survey will take about 1 minute.
    Your answers will help us to improve our website.
    We are listening to our users' valuable opinions and discussing how to act on them.
    The information collected through this survey will be used for the purpose of improving our services. In addition, the information will only be disclosed a part of a statistic in a format that will not allow identification of personal information.
    Begin Survey

    All rights reserved

    Guide Index