Chaos Zero Nightmare in IOS

A Chaos-Loop RPG Led by Choice

Walkthrough, Guilds, Tips on this special game

Our Site Score

92/100

Chaos Zero Nightmare is a standout title in the modern mobile RPG landscape, delivering a dark fantasy experience that feels distinct, stylish, and deeply atmospheric. Smilegate has succeeded in blending high-production 2D anime visuals with genuine mechanical depth, creating a game where tactical deck-building is seamlessly integrated with intense narrative stakes.

The highlight of the game lies in its combat system and roguelite progression. Managing squad stress levels alongside action points forces real decisions during encounters. Combining character abilities with card Synergies allows for creative party setups, infinite combo potential, and high-skill playstyles that reward deep experimentation.

For fans of games like Slay the Spire wrapped in premium anime aesthetics and heavy psychological lore, Chaos Zero Nightmare is a absolute must-play. Its rich presentation, compelling character casts, and strategic depth make it one of the premier mobile RPGs available.

Reviewed on: Sun Oct 25 2026
Dinsun Avatar

Dinsun Review

As a gamer who values deep tactical mechanics and respects artistic effort, I can't deny that Chaos Zero Nightmare is a gorgeous piece of software. The dark fantasy art style is dripping with atmosphere, and the integration of rogue-lite sanity systems into traditional card-based combat actually gives players real strategic decisions to make during dungeon runs. When you pull off a difficult encounter by carefully managing your team's resources and positioning, the game feels genuinely rewarding. For a mobile RPG, the production values—from the voice acting to the fluid character animations—are undeniably top-tier.

At the same time, my decades of gaming experience make me deeply cynical about the economic engine driving all this beauty. The moment you hit the mid-game progression wall, the true nature of the gacha loop rears its head, slowing progress to a frustrating crawl unless you open your wallet. RNG-heavy character acquisition and stamina gates constantly interrupt the flow, reminding you that the system is engineered to frustrate you into paying. It's a mechanically impressive game trapped inside a predatory monetization cage. If you have the discipline to play completely free-to-play as a casual side-game, the combat and art are worth experiencing; otherwise, steer clear.

Overall Stats

Pros & Cons

  • Stunning dark fantasy anime art direction and polished UI
  • Engaging card-based tactical combat with rogue-lite elements
  • High production values including strong voice acting and cinematics
  • Aggressive gacha monetization and heavy progression walls
  • Stamina systems restrict play sessions in the mid-to-late game
  • RNG-dependent character collection can alienate dedicated players

Technical Report

Performance: Demanding title that requires a modern device; runs well with high settings but can cause battery drain and heating.

Accessibility:
  • Subtitles
  • Difficulty Presets

Audience Fit

Buy if: You love high-end anime RPGs, tactical card combat, and have the self-control to manage gacha systems.

Skip if: You despise pay-to-win mechanics, stamina timers, and RNG character pulls.

Similar Games:
  • Honkai: Star Rail
  • Eversoul
  • Arknights

Reviewer Context

  • Reviewer: Dinsun, 40-year-old veteran gamer with a conservative, critical eye for substance over style
  • Hardware: iPhone
  • Playtime: 15 hours
  • Status: Mid-game progression

The Game

Available on: iPhone, iPad, iPod

Version 1.0.841Wed Oct 21 2026

Bug fixes and improvements



Requires iOS 15.0 or later. Compatible with iPhone, iPad, and iPod touch.

Zero Out All Despair

Smilegate's new title, "Chaos Zero Nightmare," is now open!

Board the SS Nightmare now!

Chaos.

A cosmic disaster that struck without warning.

"Chaos," a black fog that consumes planets, distorting their environment and lifeforms.

The beginning, or the end, of every story.

[The Blue Pot], a Chaos located on Earth, the birthplace of humanity. There have been reports of unidentifiable creatures being discovered.

And for some reason, a strange phenomenon that couldn't—no, shouldn't—be happening to the Captain is occurring.

▶ A World Drenched in Darkness, A Story Etched in Memory

Dive into a vast and haunting dark fantasy narrative!

Crushing stress, collapsing agents... and yet, the mission continues.

Break through the encroaching crisis and immerse yourself in a brutally vivid dark fantasy experience.

▶ A New Kind of RPG, Rewritten with Every Choice

Aim through the agents' eyes and feel the weight of combat at your fingertips!

Unique cards, branching choices, and evolving "Save Data" shaped by your journey through the Chaos.

Every run is unique. Build your own strategy and master the ever-changing battlefield.

▶ Characters That Dazzle the Eyes and Steal the Heart

Gorgeous 2D illustrations and striking animations make every moment a visual delight!

Fully voiced by top-tier voice actors, each scene draws you deeper into the story.

Join a cast of unforgettable characters in battle and beyond, and cherish every moment of your journey together!

※ How to Manage Permissions

After allowing access to permissions, you can reset or turn off them as follows.

- Device Settings > Privacy & Security > Select the App > Allow or Don't Allow Permissions

⁜⁜Stay up to date with the latest news on Chaos Zero Nightmare! ⁜⁜

Brand Page: https://chaoszeronightmare.onstove.com/

Official Community: https://page.onstove.com/chaoszeronightmare/en

Official YouTube: https://www.youtube.com/@ChaosZeroNightmare_EN

Official X: https://x.com/CZN_Official_EN


In-Game Events

5-Star Combatant [Rossweisse]!
PREMIERE
5-Star Combatant [Rossweisse]!
1st Anniv Seasonal Combatant Rossweisse is here!

1st Anniversary Seasonal Combatant 「Rossweisse」 is here!

Starts: 10/21/2026Ends: 11/10/2026
1st Anniversary Update!
MAJOR UPDATE
1st Anniversary Update!
The Nightmare x Carnival has begun!

The Nightmare x Carnival has begun! Enjoy the new Galactic Disaster, a powerful seasonal Combatant, and various events!

Starts: 10/21/2026Ends: 11/10/2026

Ratings & Reviews

4.9 out of 5 with 15364 Counts
★★★★★
★★★★★
★★★★★
★★★★★
★★★★★
Age Rating 13+

Screenshots

Chaos Zero Nightmare screenshot 1Chaos Zero Nightmare screenshot 2Chaos Zero Nightmare screenshot 3Chaos Zero Nightmare screenshot 4Chaos Zero Nightmare screenshot 5Chaos Zero Nightmare screenshot 6Chaos Zero Nightmare screenshot 7Chaos Zero Nightmare screenshot 8Chaos Zero Nightmare screenshot 9Chaos Zero Nightmare screenshot 10Chaos Zero Nightmare screenshot 11Chaos Zero Nightmare screenshot 12Chaos Zero Nightmare screenshot 13Chaos Zero Nightmare screenshot 14Chaos Zero Nightmare screenshot 15Chaos Zero Nightmare screenshot 16Chaos Zero Nightmare screenshot 17Chaos Zero Nightmare screenshot 18

Chaos Zero Nightmare is a dark fantasy RPG developed by Smilegate. Set in a universe consuming itself under a mysterious fog called 'Chaos', players take command of the SS Nightmare to lead agents through treacherous roguelite card battles. With branching narrative choices, top-tier voice acting, and evolving card synergies, every journey offers a unique tactical challenge.

Features

1

Atmospheric dark fantasy storyline with full voice acting

2

Strategic deck-building combat integrated with roguelite loop mechanics

3

High-quality 2D animations and striking character designs

4

Endgame boss raids and competitive hyperspace challenges

Recommended Links

App Store Page

Official listing.

Store

News on this game

Smilegate to Attend AGF 2026 with Chaos Zero Nightmare and MIRESI  Inven Global

Inven Global - Mon Oct 26 2026

Smilegate to meet fans of 'Kazena' and 'Miraesi' at AGF 2026  디지털투데이

디지털투데이 - Mon Oct 26 2026

Chaos Zero Nightmare Celebrates 1st Anniversary with New Season Update 'A Promise Upon the Snow'  Netto's Game Room

Netto's Game Room - Thu Oct 22 2026

‘Chaos Zero Nightmare’ “A Promise Upon the Snow” 1st Anni Update Now Live  PlayDayOne

PlayDayOne - Wed Oct 21 2026

Chaos Zero Nightmare Season 5 "A Promise Upon the Snow" Is Live With Rossweisse And Card Skins  GameDaily

GameDaily - Wed Oct 21 2026

Chaos Zero Nightmare Celebrates First Anniversary With New Update  TwistedVoxel

TwistedVoxel - Wed Oct 21 2026

Chaos Zero Nightmare Launches New Season 5 Update for 1st Anniversary  Inven Global

Inven Global - Wed Oct 21 2026

1st Anniversary Seasonal Character Appears, Kazena 'Promise on the Snow' Update  게임메카

게임메카 - Wed Oct 21 2026

"Chaos Zero Nightmare" Marks First Anniversary with Overhaul: "We'll Showcase the Essence of Roguelike Gameplay"  아시아경제

아시아경제 - Thu Oct 15 2026

Chaos Zero Nightmare Pity Odds: 1% Rate, $350 Cap [2026]  shattered.io

shattered.io - Tue Oct 13 2026

Gameplays

Q&A

It combines anime-style tactical turn-based deck-building card combat with roguelite progression and narrative choices.

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