Lost Sword vs Chaos Zero Nightmare
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Lost Sword
Embark on an anime fantasy adventure in this idle RPG. Engage in action-packed battles, collect charming characters, and experience a compelling story with high-quality 2D illustrations and voice acting. Grow your party through endless AFK battles and explore various dungeons and raids.
- Isekai Adventure RPG
- Action X Flirting with Girls
- AFK RPG with Real-Time Battles
- High-Quality 2D Anime Illustrations
- Spectacular Skill Action
- Realistic Character Voice Acting
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Epic Anime Fantasy RPG [Lost Sword] Endless Romantic "Action X Flirting" with the Girls! Begin the otherworld anime journey with the unique characters from Lost Sword now. Meet the action flirting RPG with vivid character skill display and strong story line. “Holy Sword Excalibur, forged by fairies, has godlike powers that can halve a mountain in a single swing. This divine relic of the Fairy, at some point, vanished without a trace; it shall reappear to serve the true king when the blessing of the Red Dragon fades away. This prophecy had only been taken as myth, but recently grew in prominence, after Uther Pendragon, who had the blessing of the Red Dragon, was struck down by the False King Vortigern. The war to determine the true king commenced, and King Uther’s daughter, Elizabeth Pendragon, left to find Excalibur, but went missing. Thus began the Great Disorder.” Game Overview ■ Isekai Adventure RPG Filled with Lively Chemistry and Charming Girls! Fairy Queen Morgana, who becomes a shut-in after many rebirths, Princess Elizabeth, who holds strong mind beneath her gentle smile, Bedivere, a cry baby but who has a strong loyalty to Elizabeth, and finally, Ethan, who joins the adventure to find the Holy Sword along with them! Begin the journey with the attractive characters to find the Holy Sword together! ■ afk RPG of Your Dreams! 2D Side-Scrolling Real Time Action & Various Battles Growing party play through endless real time afk battles! From various dungeons and single raid to interesting event dungeons, Enjoy the growth through interesting battle RPG contents! ■ Visually Stunning High Quality 2D Anime Illustrations & Spectacular Skill Action! Visually enjoyable afk battles with detailed Anime LD character motions and spectacular skill cutscenes! With battle motions and skill cutscenes that feel like real animation, Double the fun of character collection and battle! ■ Realistic Character Voice with the Top-Tier Voice Actors! Best voice actors participated! Deeply engaging experience enhanced by the realistic voices of our talented voice actors! Dive deeper into the world of Lost Sword with the top-tier voice actors. [Lost Sword Official Community Channel] - Brand Webpage: https://lostsword.wemadeconnect.com/EN/index.html#Main - Discord: https://discord.gg/ekgwAEQWu3 - Twitter (X): https://x.com/lostsword_en - Facebook: https://www.facebook.com/LostSword.Global - YouTube: https://www.youtube.com/@lostsword_en - TikTok: https://www.tiktok.com/@lostsword_en - Reddit: https://www.reddit.com/r/LostSword/ [Minimum Specs] - OS: 12 or above / iPhone XS or above / RAM 4GB or above [App Permission Information] In order to provide the services below, we request certain permissions. [Optional Permission] Phone: To collect phone numbers to send promotional text messages Notifications: To allow the app to send service notifications *Denying optional permissions does not affect gameplay. [App Permission Management] Settings > Privacy & Security > Select the desired permission > Enable or Disable access- TikTok: https://www.tiktok.com/@lostsword_en
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.
- Dark fantasy narrative
- Choice-driven RPG mechanics
- Unique card-based combat
- Evolving gameplay with branching choices
- Gorgeous 2D illustrations
- Fully voiced characters
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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
Screenshots
Verdict
The clearest difference is ads: Lost Sword at none against Chaos Zero Nightmare's shown. Lost Sword also leads on update cadence (every 10 days vs every 3 weeks) and review sentiment (76% vs 66%). Chaos Zero Nightmare's advantage is rating (4.9 vs 4.7) and chart position (#164 vs unranked). On price, in-app purchases, monetization model and device support 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
Both are free to download. Lost Sword sells 19 one-off in-app purchases and Chaos Zero Nightmare sells 45 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Chaos Zero Nightmare holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Chaos Zero Nightmare has 15K ratings behind it against 1.9K, so its average is the more settled of the two. Written reviews complicate that: 76% of Lost Sword's written reviews are positive against 66% of Chaos Zero Nightmare's, so the app with the better star average is not the one people write more warmly about.
Lost Sword ships an update every 10 days, Chaos Zero Nightmare every 3 weeks. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.
| Parameter | Lost Sword | Chaos Zero Nightmare |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.9K ratings) | 4.9 (15K ratings) — better |
| Positive reviews | 75.7% of reviews — better | 66.2% of reviews |
| Number of ratings | 1.9K | 15K — better |
| Update frequency | Every 10 days — better | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | #164 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 2.5 GB | 112 MB |
| Age rating | 17+ | 12+ |
| Developer | Wemade Connect Co., Ltd. | Smilegate, Inc. |
Customer experience
Lost Sword
Chaos Zero Nightmare
User reviews
Lost Sword
From 1.9K App Store ratingsWhat we love
- 👍 Good looks
- 👍 Fantastic Anime RPG
- 👍 Great game
- 👍 Fun idle
Room to improve
- 🔒 Can't play without sign in
- 🐛 You have been disconnected from the server
- 🐛 Connection & crash issues
- 🐛 Crash
- 🐛 It won't let me play it
Chaos Zero Nightmare
From 15K App Store ratingsWhat we love
- 🚀 Amazing, Incredible, Gorgeous, Uniquely Compelling
- 👍 Fun, Refreshing, Engaging Gameplay
- 💎 Solid Story, Animation, and Voice Acting
- 🎨 Beautiful Character Designs and Visuals
Room to improve
- 🐛 Connection Issues, Login Problems, and Crashes
- 💰 Gacha Rates are Low, Grindy Progression
- ⏱️ Lengthy, Tedious, and Time-Consuming Runs
Bugs and requests
Lost Sword
Reported bugs
4 issues- You have been disconnected from the server
- Connection & crash issues
- Crash
- It won't let me play it
Requested features
1 request- More fan service
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
In-app purchases
Lost Sword
- Powerful Duo Pack$0.99
- Holy Sword Guidance Pack$0.99
- Leon x240$1.99
Show 16 moreShow fewer
- Chapter 3 Surpass Pack$1.99
- Daily Growth Support$3.99
- Blessing of Stonehenge$3.99
- Leon x400$3.99
- Pendragon’s Legacy$3.99
- Chapter 5 Surpass Pack$3.99
- 4 Mysterious Paper$6.79
- Chapter 8 Surpass Pack$7.99
- Leon x800$7.99
- 6 Luxury Bunny Chips$8.69
- 6 Mysterious Paper2 variants$8.69
- 6 Leather Handcuffs$8.69
- 6 Basement Key$8.69
- Leon x2,400$24.99
- Leon x4,000$39.99
- Leon x8,000$79.99
Chaos Zero Nightmare
- New Captain Support Kit I$0.99
- New Captain Support Kit II$4.99
- Coronomicon Monthly Package$4.99
Show 42 moreShow fewer
- 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
Questions
Is Lost Sword free?
Is Chaos Zero Nightmare free?
Which has better reviews, Lost Sword or Chaos Zero Nightmare?
Do Lost Sword or Chaos Zero Nightmare have ads?
Which is updated more often, Lost Sword or Chaos Zero Nightmare?
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