# Amazing Aquarium

> A reflex and creature-training game focused on organizing a virtual aquarium. (iPhone/iPad app by Masakazu Yonehara.)

- Source: https://appshunter.io/ios/app/amazing-aquarium/id668421548 (this page in markdown: same URL + `.md`)
- Developer: [Masakazu Yonehara](https://appshunter.io/developer/1339210794)
- Category: Games, Entertainment, Casual, Simulation
- Price: Free with in-app purchases
- Rating: 4.67/5 from 3 App Store ratings · 17 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 23 MB
- Languages: English, Japanese
- Released: 2013-07-27
- Data updated: 2026-06-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/amazing-aquarium/id668421548/reviews.md

## What is Amazing Aquarium?

Hit left for sea urchin and right for moss balls!
Organize your aquarium and grow lovely moss balls!
Moss balls are a fascinating form of marine life -- algae that grows into a velvety ball. They can only be found in Japan and some parts of Europe.

Presenting an amazing fusion: a quick-thinking reflex game meets a slow-paced creature training game!

Reflex game:
-Tap or flick to sort the incoming sea urchin and moss balls!

Aquarium game:
-Grow sea urchin and moss balls in your very own aquarium
-Keep that tank tidy! Add fresh water to your aquarium to keep it clean
-Don't neglect your little creatures -- they'll shrivel up and die!

## Key features

- Sort sea urchins and moss balls
- Organize and grow virtual aquarium
- Tap or flick controls
- Keep aquarium clean
- Care for marine creatures
- Reflex and training gameplay

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| HP Boost | $0.99 | one-time |
| Ever-Pure Water | $0.99 | one-time |


## Recent user reviews (10 of 17)

All indexed reviews: https://appshunter.io/ios/app/amazing-aquarium/id668421548/reviews.md

### 5/5 — 名の湯はやなリネ比喩

*2020-02-01, version 1.2.2*

らたらアランさたらタホタユタ本たそ旦那よはたやたら多ホタルタロアンは垂れたボタンだろわたは真綿ロタユア、あんたポアロたんたら他は私自身自家発電効率的市場仮説！
さ

### 5/5 — 5年ぶりにインストールしました！

*2019-09-06, version 1.2.0*

ひさびさにまりもを育てています。
可愛くて楽しいのですが、ウニとまりもを仕分けるゲームがスコア画面に入ろうとすると必ずアプリが落ちてしまいます。
どこに連絡したらいいのかわからないのでとりあえずレビューに書いておきます。
どうにか治ってほしいなぁ…

### 1/5 — データ

*2015-11-07, version 1.1.2*

まりもを育てる方メインでやっているけどすぐにデータが消えてやる気無くす
なんとか改善して欲しいです

### 5/5 — $

*2014-10-25, version 1.1.2*

😃😱👍 ya good

### 4/5 — ストレス解消

*2014-07-19, version 1.1.2*

結構面白い

### 5/5 — 0-o

*2014-06-27, version 1.1.2*

About as good as moss growing games get!

### 1/5 — や〜めた(激怒)

*2014-06-14, version 1.1.2*

セーブデータが消えてしまい再度チャレンジしてウニ＆まりもを増やしたのに…またセーブデータが消えた。もう二度とヤラない‼︎

### 3/5 — ウニ

*2014-04-02, version 1.1.1*

ウニを買ったのに、水槽に居ないのは何故！？

### 4/5 — まあまあ

*2014-03-31, version 1.1.1*

地味に面白い？

### 5/5 — なんかおもろい！

*2013-12-30, version 1.1*

単純だけど、難しくて、対戦相手が強いと燃える！
うちできにはおもろい！

## Frequently asked questions about Amazing Aquarium

### What is Amazing Aquarium?

Amazing Aquarium is a game that combines a quick-thinking reflex game with a slow-paced creature training game. Players organize their aquarium by sorting incoming sea urchins and moss balls, and care for their virtual creatures.

### How do you play Amazing Aquarium?

Gameplay involves tapping or flicking to sort incoming sea urchins and moss balls in a reflex game. In the aquarium game, you grow and care for these creatures, keeping the tank clean and providing fresh water.

### What devices does Amazing Aquarium support?

Amazing Aquarium is available on iPhone, iPad, and iPod. It was released on July 27, 2013, and its latest version is 1.2.2, last updated on October 11, 2019.

### What is the age rating for Amazing Aquarium?

Amazing Aquarium has an age rating of 4+, making it suitable for younger players. The game focuses on simple mechanics and creature care.

### Does Amazing Aquarium have ads?

No, Amazing Aquarium does not contain advertisements. The app is free to download and play, with optional in-app purchases.

### How often is Amazing Aquarium updated?

Amazing Aquarium was last updated on October 11, 2019, with version 1.2.2. While it has not received recent updates, it remains playable on supported devices.

### What are moss balls in Amazing Aquarium?

Moss balls are a fascinating form of marine life featured in Amazing Aquarium. They are algae that grow into a velvety ball and are traditionally found in Japan and parts of Europe.

### Can I play Amazing Aquarium offline?

The description does not specify offline play capabilities. However, the gameplay mechanics suggest it could be playable without an internet connection, focusing on single-player aquarium management and reflex challenges.

## Version history (last 5 releases)

### 1.3.0 — 2026-05-27

Update SDKs.

### 1.2.2 — 2019-10-11

- Fixed bugs.

### 1.2.1 — 2019-10-10

- Fixed bugs.

### 1.2.0 — 2018-11-09

- Fixed for iOS12.

### 1.1.2 — 2014-06-05

- Fixed bugs.

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## More apps by Masakazu Yonehara

- [Salmon Roe](https://appshunter.io/ios/app/salmon-roe/id436078937)
- [Odd Cat Out](https://appshunter.io/ios/app/odd-cat-out/id441062266)
- [Pan Touch](https://appshunter.io/ios/app/pan-touch/id451106542)
- [Mysterious Creatures](https://appshunter.io/ios/app/mysterious-creatures/id457832536)
- [Planet Bom Bom](https://appshunter.io/ios/app/planet-bom-bom/id470500682)
- [Hurdle Hell](https://appshunter.io/ios/app/hurdle-hell/id484819577)

All apps by Masakazu Yonehara: https://appshunter.io/developer/1339210794

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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 2026-06-01.*