Comparison

Chaos Zero Nightmare vs Arknights

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Chaos Zero Nightmare

Embark on a dark fantasy RPG adventure where your choices shape the narrative and gameplay. Battle cosmic horrors with unique cards and evolving strategies. Experience a visually stunning world with fully voiced characters.

Highlights
  • Dark fantasy narrative
  • Choice-driven RPG mechanics
  • Unique card-based combat
  • Evolving gameplay with branching choices
  • Gorgeous 2D illustrations
  • Fully voiced characters
Features
Read full description

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

About

Arknights

Explore the untamed world of Talos-II as the Endministrator of Endfield Industries. Lead your operators to defend and expand humanity's frontiers, gather resources, and build a new homeland. A new era of change awaits your choice.

Highlights
  • World exploration
  • Resource gathering
  • Base building
  • Operator management
  • Strategic defense
  • Story-driven progression
Features
Read full description

Welcome to Talos-II, a world of breathtaking beauty and constant danger. The earliest settlers braved wars and disasters, and through more than 150 years of relentless effort, they carved out a foothold and laid out a new foundation for humanity — the Civilization Band. Yet most of this world remains untamed. Vast wildlands and uninhabited territories stretching toward the horizon still await exploration. Every step forward is shadowed by threats — whether remnants of the past or dangers never before seen. Expansion and exploration, as well as continuity and progression, are the eternal themes throughout the evolution of civilization, and the ultimate pursuit of every life that constitutes it. As the Endministrator of Endfield Industries, you will lead your operators to defend and expand the frontiers of humanity. Your Originium engines rumble in the wildlands while production machinery works around the clock to deploy new AIC Factory production lines. Explore the world of Talos-II and gather various resources. Use the AIC Factory to overcome dangers and work with the operators to build a better homeland for humanity. A new era of change has dawned upon this ancient world. Time to make your choice, Endministrator. ※ The app is free to download, but it offers in-app purchases for certain items (including random items).

Screenshots

Chaos Zero Nightmare4 screens
Arknights4 screens

Verdict

The call

The clearest difference is ads: Arknights at none against Chaos Zero Nightmare's shown. Chaos Zero Nightmare's advantage is rating (4.9 vs 4.5). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Chaos Zero Nightmare sells 45 one-off in-app purchases and Arknights sells 21 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Chaos Zero Nightmare holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 15K and 6.5K respectively. Written reviews point the same way: 66% of Chaos Zero Nightmare's written reviews are positive against 64% of Arknights's.

UpkeepUpdate frequency

Chaos Zero Nightmare ships an update every 3 weeks, Arknights every 6 weeks. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

Scorecard2 real differences · 9 level
Chaos Zero Nightmare versus Arknights: the parameters behind the verdict, then further details
ParameterChaos Zero NightmareArknights
PriceFreeFree
Rating4.9 (15K ratings) — better4.5 (6.5K ratings)
Positive reviews66.2% of reviews — better64.2% of reviews
Number of ratings15K — better6.5K
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#105 — better#180
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size112 MB3.4 GB
Age rating12+12+
DeveloperSmilegate, Inc.GRYPH FRONTIER PTE.LTD.

Customer experience

Chaos Zero Nightmare

All ratings14,802 ratings
Positive97.2%
Neutral0.7%
Negative2.0%
Written reviews948 reviews
Positive66.2%
Neutral8.0%
Negative25.7%

Arknights

All ratings6,455 ratings
Positive86.2%
Neutral2.1%
Negative11.7%
Written reviews720 reviews
Positive64.2%
Neutral6.3%
Negative29.6%

Bugs and requests

Chaos Zero Nightmare

Reported bugs

2 issues
  • Banned IP Issues
  • Missing Files and Inability to Load

Requested features

3 requests
  • English Dubbed Version
  • More Male Characters
  • Flexible Character Setup

Arknights

Not enough reviews yet to summarise bugs or requests.

In-app purchases

45 purchases

Chaos Zero Nightmare

One-time45
  • New Captain Support Kit I$0.99
  • New Captain Support Kit II$4.99
  • Coronomicon Monthly Package$4.99
Show 42 more
  • Half-Anniversary Ticket$4.99
  • Tactical Asset Monthly Supply$4.99
  • Agent Growth Kit$4.99
  • Aether Supply Kit$4.99
  • Gentle Ripples on the Night Sea$7.99
  • Crimson Yearning Within the Waves$7.99
  • Youth Under the Sun$7.99
  • Special Data7 variants$9.99
  • Partner Promotion Kit$9.99
  • Imp's Mischief I$14.99
  • Covert Exchange I$14.99
  • Scent of Summer I$14.99
  • Legacy of Will I$14.99
  • Galaxy Melody I$14.99
  • Emergency Rescue Operation II$14.99
  • Crystal ×980$14.99
  • Regular Rescue Operation II$14.99
  • Golden Nebula Package I$14.99
  • SS Nightmare Security Upgrade I$14.99
  • Budding Seed of Karmic Fire I$14.99
  • Zero Data6 variants$19.99
  • Crystal ×1980$29.99
  • Royal Level Up Package$29.99
  • Golden Nebula Package II$29.99
  • Sweet Confession Gift$29.99
  • Galactic Disaster 3rd Supply Kit II$29.99
  • Emergency Rescue Operation III$29.99
  • Imp's Mischief II$49.99
  • Covert Exchange II$49.99
  • Scent of Summer II$49.99
  • Legacy of Will II$49.99
  • Galaxy Melody Ⅱ$49.99
  • SS Nightmare Security Upgrade II$49.99
  • Silver Winter Star Package I$49.99
  • Galactic Disaster Support Kit I$49.99
  • Large Scale Rescue Operation I$49.99
  • Imp's Mischief III$99.99
  • Covert Exchange Ⅲ$99.99
  • Scent of Summer III$99.99
  • Galaxy Melody Ⅲ$99.99
  • Crystal ×6480$99.99
  • Golden Nebula Package Ⅳ$99.99
21 purchases

Arknights

One-time21
  • Homecoming Curios Collection Pack$0.99
  • Grand Vision Arsenal Bundle$0.99
  • Mine bits of Origeometry$1.99
Show 18 more
  • Monthly Pass$4.99
  • Mine a set of Origeometry$8.99
  • Protocol Customized$9.99
  • Mine a pile of Origeometry$12.99
  • Value Arsenal Ticket Pack$13.99
  • Winter Hunt HH Bundle$14.99
  • Dawnstar HH Bundle$14.99
  • Rift Vigile HH Bundle$14.99
  • Expurgatory HH Bundle$14.99
  • Pugilistic HH Bundle$14.99
  • Spectral Splendor HH Bundle$14.99
  • Discount Arsenal Bundle$16.99
  • All Rounder Bundle$19.99
  • Standard Arsenal Bundle$19.99
  • Mine a bag of Origeometry$20.99
  • Protocol Flow Bundle$29.99
  • Mine a box of Origeometry$33.99
  • Mine a crate of Origeometry$69.99

Questions

Is Chaos Zero Nightmare free?
Chaos Zero Nightmare is free to download, with in-app purchases available.
Is Arknights free?
Arknights is free to download, with in-app purchases available.
Which has better reviews, Chaos Zero Nightmare or Arknights?
Chaos Zero Nightmare is rated higher. Chaos Zero Nightmare averages 4.9 out of 5 from 15K ratings, while Arknights averages 4.5 from 6.5K ratings.
Do Chaos Zero Nightmare or Arknights have ads?
Chaos Zero Nightmare shows ads; Arknights does not.
Which is updated more often, Chaos Zero Nightmare or Arknights?
Chaos Zero Nightmare ships an update every 3 weeks, and Arknights every 6 weeks. Most recently, Chaos Zero Nightmare was updated on September 24, 2026 and Arknights on September 23, 2026.
Which is more popular, Chaos Zero Nightmare or Arknights?
Chaos Zero Nightmare currently peaks at #105 in the App Store charts, and Arknights at #180. Chart position reflects recent download velocity rather than total install base.

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