# Concentration Game, 9Bubbles — Stress Relief & Brain Training

> Memory and concentration game for brain training and stress relief. (iPhone/iPad app by Lisfee, Inc..)

- Source: https://appshunter.io/ios/app/concentration-game-9bubbles/id1366569537 (this page in markdown: same URL + `.md`)
- Developer: [Lisfee, Inc.](https://appshunter.io/developer/1146331015)
- Category: Games, Entertainment, Board, Trivia
- Price: Free with in-app purchases
- Rating: 4.50/5 from 45 App Store ratings · 55 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 43 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), European Spanish
- Released: 2018-04-04
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/concentration-game-9bubbles/id1366569537/reviews.md

## What is Concentration Game, 9Bubbles?

This game will make you smarter and relieve your stress.
It is easy at the beginning, but gets more and more difficult.
Theoretically, only 1 player per 10,000 can beat all the stages. Let's try!

◆Game Rule◆
Rules are very simple.
Memorize the "colors" and "positions" of bubbles which are displayed for only 3 seconds.
After they disappear, use your memory, select bubbles and burst them.

◆Game Feature◆
Continue playing this game and you will see that your power of memory improves.

The game does more than just improve your memory.
Seeing colors is mainly handled by the right side of your brain which is said to control your creativity and intuition. Just by playing this game, you will be able to improve your creative ability.

The game has 28 stages in total. If you beat all the stages, the right side of your brain will be able to handle more information than ever!

There are many games which train the left side of the brain including Sudoku and other number puzzles, but there are not many games in the world which train the right side of the brain.
 
Play this game, train the right side of your brain and make your everyday life full of creativity!

## Key features

- Memorize colors and positions
- Burst bubbles based on memory
- Improves memory power
- Enhances creative ability
- 28 challenging stages
- Trains the right side of the brain

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| FEEL GOOD | $1.99 | one-time |
| TRY STAGE28 | $1.99 | one-time |
| 10 LIFEs | $1.99 | one-time |
| DELETE ADs | $1.99 | one-time |


## Recent user reviews (10 of 55)

All indexed reviews: https://appshunter.io/ios/app/concentration-game-9bubbles/id1366569537/reviews.md

### 1/5 — 潰してる途中に広告出る

*2024-01-25*

広告が消えません。広告ゲームの入手ボタンだけは反応してるー

### 1/5 — ひど

*2023-06-05*

広告重過ぎww

### 5/5 — 広告が消せない

*2023-04-04*

ゲームは楽しいのに広告が消せないからなおしてほしい

### 5/5 — 面白い

*2022-06-01*

単純ルールだけど、後半から難しくなる。

### 1/5 — 楽しいけど広告邪魔

*2021-02-13*

広告がしょっちゅう入ってきてその度に問題が変わるので次のステージに進めない

### 3/5 — 広告が〜

*2020-10-13*

広告出過ぎるのがちょっと〜ゲームは最高に楽しい！

### 1/5 — 詐欺やん

*2020-08-12, version 1.5.8*

広告消すために課金したのに広告出るんだけど。笑
あと、アプリのコンセプトはいいのだから、ステージごとに練習できるようにしてほしい。

### 2/5 — ウーン

*2020-08-06, version 1.5.8*

面白いけど一回ごとにCM見なきゃいけないのが面倒い。せめてワンステージクリアでお願いします

### 5/5 — 楽しい

*2020-06-12*

毎日　いつも、挑戦しています。
簡単かとおもいきや、
中々の　難易度です。
脳を刺激しているようで、
やりがあが、あります。

### 1/5 — 広告

*2020-05-06, version 1.5.8*

広告の削除を購入しましたが
ステージの間の広告が削除されないです。
なぜでしょうか？
対応よろしくお願いします！

## Frequently asked questions about Concentration Game, 9Bubbles

### What is Concentration Game, 9Bubbles?

Concentration Game, 9Bubbles is a mobile game designed to enhance memory, concentration, and creativity. Players must memorize the colors and positions of bubbles displayed briefly and then burst them based on recall. The game features 28 stages of increasing difficulty.

### How does this game improve my brain?

The game specifically targets the right side of your brain, which is associated with creativity and intuition. By repeatedly memorizing and recalling information, players can improve their memory power and potentially boost their creative abilities. It offers a unique way to train the right brain, unlike many left-brain focused puzzles.

### Is Concentration Game, 9Bubbles free to play?

Yes, the game is free to download and play. However, it does contain advertisements and offers in-app purchases, which may provide additional benefits or options within the game.

### What are the benefits of playing this game?

Playing this game can lead to improved memory, enhanced concentration, and increased creative ability. It is also presented as a method for stress relief. The progressive difficulty ensures a continuous challenge as players advance through its 28 stages.

### Who is this game for?

This game is suitable for anyone looking to sharpen their cognitive functions, particularly memory and concentration. It is also beneficial for individuals interested in stimulating their creativity and seeking a mentally engaging way to relieve stress.

## Version history (last 5 releases)

### 1.5.11 — 2023-12-15

- Fixed bugs.

### 1.5.10 — 2020-11-17

- Changed app title in Japanese.

### 1.5.9 — 2020-11-16

- Added Preview in App Store.

### 1.5.8 — 2020-03-20

- Changed ads frequency.
- Fixed screen shot in App Store.

### 1.5.7 — 2020-03-08

- changed UI.

## Apps similar to Concentration Game, 9Bubbles

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Memory Match Brain Trainer](https://appshunter.io/ios/app/memory-match-brain-trainer/id479656311) | 4.2 (1,296) | Free | Games |
| [Bubble Pop! Puzzle Game Legend](https://appshunter.io/ios/app/bubble-pop-puzzle-game-legend/id1444990764) | 4.6 (234,581) | Free | Games |
| [Bubble Shooter: Pop & Blast](https://appshunter.io/ios/app/bubble-shooter-pop-and-blast/id604044220) | 4.5 (347,924) | Free | Games |
| [Memory Games with Animals](https://appshunter.io/ios/app/memory-games-with-animals/id631738108) | 4.2 (24,942) | Free | Games |
| [BlockPuz - Block Puzzles Crush](https://appshunter.io/ios/app/blockpuz-block-puzzles-crush/id1547762178) | 4.9 (197,499) | Free | Games |
| [Memory!](https://appshunter.io/ios/app/memory/id467939841) | 4.3 (2,846) | Free | Games |

## More apps by Lisfee, Inc.

- [花・植物好きが集まる写真共有・図鑑アプリ, FLOWERY](https://appshunter.io/ios/app/flowery/id1270079385)
- [フォローチェック for インスタ, TAGGER](https://appshunter.io/ios/app/for-tagger/id1296868467)
- [Pieces - Brain Games](https://appshunter.io/ios/app/pieces-brain-games/id1440566986)
- [ヒット&ブロー オンライン対戦ゲーム](https://appshunter.io/ios/app/and/id1453133689)
- [うちわ文字作成 アプリ, ウッチー](https://appshunter.io/ios/app/id1456466593)

All apps by Lisfee, Inc.: https://appshunter.io/developer/1146331015

## Related topics

[concentration game, 9bubbles](https://appshunter.io/ios/topics/concentration-game-9bubbles) · [concentration game](https://appshunter.io/ios/topics/concentration-game)

---

*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 2026-08-29.*