# World Eater and Probiotic Hero — Probiotics Action Game

> Action-adventure game with probiotic growth, randomized amulet tactics, and real-time combat. (iPhone/iPad app by Hiromichi Nonaka.)

- Source: https://appshunter.io/ios/app/world-eater-and-probiotic-hero/id6667103099 (this page in markdown: same URL + `.md`)
- Developer: [Hiromichi Nonaka](https://appshunter.io/developer/1576463237)
- Category: Games, Card, Role Playing
- Price: Free with in-app purchases
- Age rating: 9+
- Requires: iOS 13.0 · 486 MB
- Languages: American English, Japanese
- Released: 2025-01-17
- Data updated: 2026-06-05
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/world-eater-and-probiotic-hero/id6667103099/reviews.md

## What is World Eater and Probiotic Hero?

【Features】		
・Grow by "Probiotics"?		
	The protagonist, Nana, finds herself washed up on an unfamiliar beach.	
	For some reason, in this world, it seems you can grow by Probiotics.	
	Does Probiotics hold some special meaning in this place?	
		
・Create Your Own "Tactics"!		
	Defeating enemies will drop items called Amulets.	
	Amulets come with a wide variety of effects—some enhance each other, while others cancel each other out.	
	What Amulet you get, where, and when is completely random.	
	Experiment with the best combinations every time!	
		
・"Combat" that Demands Instant Decisions!		
	Most Amulets don't activate their full effects just by being equipped.	
	In addition, during combat, you must respond to enemy attacks and various obstacles within a limited time.	
	Make quick decisions to find the optimal solution and maximize the effects of your Amulets!	
		
・Unravel the "Story" from Fragmented Information!		
	Unravel the Story from Fragmented Information!	
	Throughout the game, Nana and her companions will overcome many trials.	
	As each trial is completed, a story related to it is revealed, gradually unveiling the bigger picture.	
	Can you uncover the mysteries of the world Nana and her friends inhabit?

## Key features

- Probiotic-based character growth
- Randomized amulet collection and effects
- Strategic combination of amulets
- Real-time combat with time-limited decisions
- Unraveling a fragmented story
- Exploring an unfamiliar world

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| EX Pass | $3.99 | one-time |


## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/world-eater-and-probiotic-hero/id6667103099/reviews.md

### 5/5 — かなり面白い！

*2025-06-05, version 1.0.3*

プレイ3周目で地喰いオロチ撃破。アミュレットの組み合わせ次第でほぼ無双できるので難易度はそこまで高くはなかった。星喰いオロチはまだ未プレイだがレビューでは難度高めのようなので期待大です！

### 2/5 — 日本語設定できないn

*2025-04-26, version 1.0.3*

日本語に変更できないのは私だけ？j

### 4/5 — 無料の良ゲー、ただし一部難あり

*2025-03-23, version 1.0.3*

無料で楽しむ分には良ゲーでした。プレー中の動画視聴はバフ効果を得るための新設設計です。想像以上に楽しめたので、お布施の課金をしました。これからプレーする方へのアドバイスとして、◯破壊+で味方の凍結が解除できます。ナナに付けると凍結した味方が攻撃参加してくれます。◯魔法剣雷は防御力貫通を敵に付与します。ただし、そのターン限定なので、行動順によっては無駄にまります。ナナに付けると効果的です。◯フローラ神の活性化は、次のアミュレットを追加オプション確定の状態としてくれます。 開発者さま、個人的には以下の点を改善するともっと良くなると思いました。ご参考まで◯課金ありで良いので戦闘スピードアップ機能が欲しい。周回に時間がかかり過ぎる。◯海岸のBGMをもっと冒険感あるものに変えるべき。他のBGMは良かったのに、どうして最初のステージが1番ショボいのか。カモメの鳴き声だけって、どうしてこうなった、、、◯状態異常の効果が戦闘中に見れないのが、不親切。バトル情報から読み取れるがすぐに分からないのは良く無い◯敵の攻撃もバトル情報から読み取れるが、覚えるまでが大変。長押しで表示出来るようにすべき◯後半のトラップ魔法陣がウザすぎ。一部アミュレットが役に立たない。

### 5/5 — 少し時間がかかる

*2025-03-18, version 1.0.3*

加速機能が欲しくなる。
ガーディアンの出現率が高すぎるかも。体感7割。

### 1/5 — ランダム移動阻害

*2025-03-16, version 1.0.3*

それによって隊列入れ替えて発動する系は安定性なくて微妙です。
何とは言わないけど一部の壊れルーンでしかほぼ勝てない

### 5/5 — ゲーム内容は好み

*2025-03-14, version 1.0.3*

考えたコンボが想定通りに働くと気持ちよかった。アチーブメントの達成で、目に見えて基礎能力が上がるのもいい
気になる点としては、全体的に動作がもっさりとしていて周回しているともどかしく感じるところ。戦闘アニメの高速化や演出スキップは欲しいかも。あとは敵のHPゲージも見えてほしい

### 4/5 — よくわからないが…

*2025-03-09, version 1.0.3*

たぶん4回目のプレーで地喰いオロチをクリアした。お手軽強すぎコンボが存在するので、その点は要改善ではないかと思われる（試してないからわからないが、盤面アレコレ動かさなくてもほぼ勝てそうだとすら思った）。なお、セカンドステージ？に行ってみたら全然歯が立たないので、やはりアチーブメントをじっくり埋めることが想定されていたものだと思われる…。

ゲームシステム自体は良いし、シナリオ？も私は好みだった。謎の整腸要素も回収されるし。

## Frequently asked questions about World Eater and Probiotic Hero

### What is the main gameplay mechanic in World Eater and Probiotic Hero?

The core gameplay involves growing your character by consuming 'Probiotics' and strategically combining various 'Amulets' dropped by enemies. These amulets have diverse effects that can enhance or cancel each other out, requiring experimentation to find optimal combinations.

### Does World Eater and Probiotic Hero have ads?

Yes, World Eater and Probiotic Hero contains advertisements. These ads are part of the free-to-play model and may appear during gameplay or between sessions.

### How does combat work in World Eater and Probiotic Hero?

Combat demands instant decisions. Most amulets require specific conditions to activate their full effects, and during battles, you must quickly respond to enemy attacks and obstacles within a time limit to maximize amulet benefits.

### Can I play World Eater and Probiotic Hero offline?

The provided information does not specify whether World Eater and Probiotic Hero supports offline play. It is recommended to check the app store page for details on connectivity requirements.

### What is the story progression in World Eater and Probiotic Hero?

The story unfolds gradually as you complete trials. Each completed trial reveals a related story segment, piecing together the mysteries of the world Nana and her companions inhabit.

### How often is World Eater and Probiotic Hero updated?

The latest version is 2.0.2, released on 2025-11-15. This indicates a recent update, suggesting the developers are actively maintaining and potentially improving the game.

### What devices is World Eater and Probiotic Hero available on?

World Eater and Probiotic Hero is supported on iPhone, iPad, and iPod devices. It is designed for iOS platforms.

### What is the age rating for World Eater and Probiotic Hero?

The game has an age rating of 9+. This suggests it is suitable for players aged 9 and above, with content generally considered appropriate for this age group.

## Version history (last 5 releases)

### 2.0.2 — 2025-11-15

【Bug Fixes】
- Fixed an issue where language switching was not possible.
- Fixed an issue where selecting "Return to Title" would cause the game to become unplayable.
- Fixed an issue where Amulet SP-related tutorials might not be displayed.

### 2.0.1 — 2025-11-11

[Bug Fixes]
Fixed an issue where the game would become unplayable if some dialogues and the pose screen overlapped.

### 2.0.0 — 2025-11-10

-Added a new post-story dungeon continuing the main storyline.
-Added a new roguelike dungeon designed for endless replayability.
-Introduced 11 new Amulets.
-Added 2 new Activated Amulet.
-Adjusted and rebalanced several existing Amulet effects.
-Added the new Amulet SP system, which allows Amulet consumption.
-Added Peek Mode, enabling players to look around during dungeon exploration.
-Introduced the Balancing Object System, where changing The gut environment balance alters dungeon layouts.
-Added three new Exit systems to enhance replay value.
-Updated area effects—players can now hold multiple special effects simultaneously.
-Added Golden Eggification to the Tempest Card, transforming Step Cards in the area into Golden Egg Cards.
-Added a display assist feature that shows effect names when Amulet effects, buffs, or debuffs are triggered.
-Introduced new monsters across various areas.
-Updated UI to display monster HP gauges.
-Added and improved the Tutorial, while removing some obsolete sections.
-Added and refined Achievements, removing outdated ones.
-Enhanced features unlocked via EX Pass:
  1.EX Dungeon Cards now appear in multiple areas beyond Farthest Beach.
  2.Added a Battle Speed feature, allowing faster combat animations.
-Adjusted overall balance for all characters and monsters.
-Improved graphics across multiple areas for better visual quality.

### 1.0.3 — 2025-03-04

[Bug fix]
- Fixed an issue where it became impossible to progress when displaying the "Hyper Probiotics" Tutorial.
- Fixed an issue where the "Lord Boss" tutorial was not displayed correctly when redisplayed.

### 1.0.2 — 2025-03-04

[Bug fix]
- Fixed an issue where progress could not be made due to incorrect placement of Arc cards.
- Fixed an issue where the dungeon card “Translation” was being transferred to an unintended location.
- Changed the arrangement of some dungeon cards
- Fixed an issue where the Amulet could be carried over when restarting the game.
- Fixed an issue where you could not progress when battling some enemy monsters.

[Function added]
- Added tutorial window “Road Boss”

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## More apps by Hiromichi Nonaka

- [Prefantry](https://appshunter.io/ios/app/prefantry/id1576463235)

All apps by Hiromichi Nonaka: https://appshunter.io/developer/1576463237

## Related topics

[world eater and probiotic hero](https://appshunter.io/ios/topics/world-eater-and-probiotic-hero) · [probiotic](https://appshunter.io/ios/topics/probiotic)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*