# oop.

> Relaxed puzzle game with chain reaction mechanics to eliminate squares. (iPhone/iPad app by 文锋 郑.)

- Source: https://appshunter.io/ios/app/oop/id1448670888 (this page in markdown: same URL + `.md`)
- Developer: [文锋 郑](https://appshunter.io/developer/1590995911)
- Category: Games, Entertainment
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 70 MB
- Languages: English
- Released: 2019-03-24
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/oop/id1448670888/reviews.md

## What is oop.?

Welcome to the oop.

oop is a relaxed and comfortable puzzle game. 
Succinct pictures and play methods, using the chain reaction, experience the pleasant experience brought by the game.

Here are some squares with different numbers.

Give play to your wisdom, arrange the order,eliminate all square and clear up all the levels! Believe that smart you can do it!

How to play:
- Click on the square and add the number.
- The square with the number 4 will disappear when clicked and bullets will be fired around it.
- A square hit by each bullet adds one to the number.
- There are rotating baffles to change the direction of the bullet; black holes to swallow the bullet; and shells to restrict the bullet's entry and fire.
- Causing chain reaction in limited steps, eliminating all square tablets

Characteristic
- Succinct pictures and Play Method
- Challenging levelss
- Perfect prompting system
- The current version has 124 interesting checkpoints
- A comfortable chain reaction.

Email:zgamegz@hotmail.com

## Key features

- Chain reaction gameplay
- Eliminate all squares
- Challenging levels
- Perfect prompting system
- Succinct graphics and play method

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/oop/id1448670888/reviews.md

### 5/5 — 😂😂😂

*2019-08-06, version 1.2*

Lmaoooo I love the name broooo

## Frequently asked questions about oop.

### What is the gameplay of oop.?

oop. is a puzzle game where you click on squares to add numbers. When a square reaches 4, it disappears and fires bullets. These bullets hit other squares, increasing their numbers, and can trigger chain reactions to clear levels.

### How many levels are in oop.?

The current version of oop. features 124 interesting checkpoints, offering a good amount of content for players to enjoy.

### Is oop. free to play?

Yes, oop. is available for free, allowing anyone to download and enjoy its puzzle gameplay without any initial cost.

### What devices is oop. available on?

oop. is a mobile application, designed for smartphones and tablets. Specific device compatibility would depend on the operating system version.

### What is the age rating for oop.?

oop. has an age rating of 4+, making it suitable for young players and families.

### How often is oop. updated?

The last update for oop. was on December 5, 2019, with version 2.2.2. Future updates would depend on the developer's plans.

### Does oop. have ads?

The provided data does not specify if oop. contains advertisements. If ads are present, they would be part of the free gameplay experience.

### What makes oop. unique?

oop. stands out with its comfortable chain reaction mechanic and succinct, minimalist design. The game focuses on strategic thinking to clear levels rather than complex controls.

## Version history (last 1 release)

### 2.2.2 — 2019-12-05

new player guide.

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## More apps by 文锋 郑

- [Clear 4](https://appshunter.io/ios/app/clear-4/id1546584385)
- [c-c](https://appshunter.io/ios/app/c-c/id1628265817)
- [Get Max](https://appshunter.io/ios/app/get-max/id6444671010)
- [Line-Match](https://appshunter.io/ios/app/line-match/id6479170496)
- [monster suqare](https://appshunter.io/ios/app/monster-suqare/id6736940932)

All apps by 文锋 郑: https://appshunter.io/developer/1590995911

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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 2026-06-10.*