# Cross Virus — Thinking puzzle game

> Strategic block-placement puzzle game to contain virus growth. (iPhone/iPad app by CHIEHIRO HASHIZUME.)

- Source: https://appshunter.io/ios/app/cross-virus/id944133247 (this page in markdown: same URL + `.md`)
- Developer: [CHIEHIRO HASHIZUME](https://appshunter.io/developer/348592290)
- Category: Games, Board, Puzzle
- Price: Free
- Rating: 4.25/5 from 8 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 5 MB
- Languages: English, Japanese
- Released: 2014-12-05
- Data updated: 2026-06-23
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/cross-virus/id944133247/reviews.md

## What is Cross Virus?

This game is the 19th iOS game for the Web game site "DAN-BALL".
Game to be enclosed by a block, virus to grow in a cross direction.

You can place blocks in the locations that you have touched. Viruses can’t grow where there are blocks. After you have placed three blocks, the viruses will grow. It is the end of the game when a virus can not be growth. Place the block so that the number of virus is minimized.

## Key features

- Strategic block placement
- Virus growth containment
- Minimize virus count
- Cross-directional virus growth
- Touch-based controls

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/cross-virus/id944133247/reviews.md

### 5/5 — It’s fun

*2020-07-20*

Like world editor it’s very fun and enjoyable

### 5/5 — ☆3むずい

*2018-10-05, version 1.1.0*

4問目がbestの30でクリアしても☆3にならない
29にする方法がわからない

### 5/5 — Simple, Yet challenging.

*2016-08-09*

A very simple concept but it is very thought provoking, and surprisingly, challenging. You can't "lose" the levels(from what I can tell) but the star ratings give you a goal to work towards. Great time waster.

### 4/5 — Great puzzle, very advanced strategy game.

*2016-02-25*

This fun, simple game betrays it's insidious nature. You'll breeze through the levels, but your measly one star ratings will eat at you. You'll keep trying - and failing - to get three stars on each level. This is one of the best, simplest, and most challenging puzzle games I've ever played.

### 5/5 — なかなかむずいでごんす。

*2015-05-25, version 1.0.0*

菌の繁殖は止められないので「ペニシリン」を‼︎

### 5/5 — いいですね

*2014-12-27, version 1.0.0*

さすがDAN-BALLさんです。
PC版の棒レンジャーや粉遊びからずっと遊ばせて頂いてます、これからも期待してますね！

## Frequently asked questions about Cross Virus

### What is the objective of Cross Virus?

The objective of Cross Virus is to strategically place blocks to minimize the growth of viruses that expand in a cross direction. The game ends when a virus cannot grow further.

### How do you play Cross Virus?

You play Cross Virus by touching the screen to place blocks. After placing three blocks, viruses will begin to grow. Your goal is to place blocks in a way that limits their expansion.

### Does Cross Virus have ads?

Yes, Cross Virus contains advertisements. As a free game, ads are displayed to support its development and continued availability.

### What devices is Cross Virus available on?

Cross Virus is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is Cross Virus updated?

Cross Virus was last updated on January 16, 2024, with version 1.4.0. This indicates regular updates to maintain and improve the game.

### What is the age rating for Cross Virus?

Cross Virus has an age rating of 4+, making it suitable for younger players and families.

### Can I play Cross Virus offline?

The provided information does not specify offline play capabilities. However, many puzzle games of this nature can be played without an internet connection.

### What is the user rating for Cross Virus?

Cross Virus has a rating of 4.1 stars based on 7 ratings, indicating generally positive user reception.

## Version history (last 5 releases)

### 1.5.0 — 2026-06-19

Support iOS 18.
Improved stability and performance.
Fixed some bugs.

### 1.4.0 — 2024-01-16

Support iOS 17.
Improved stability and performance.
Fixed some bugs.

### 1.3.0 — 2023-02-24

Support for iOS 15.
Improved stability and performance.

### 1.2.1 — 2021-04-23

Improved stability and performance.
Fixed some bugs.

### 1.2.0 — 2020-12-07

Support for iOS 14.
Improved stability and performance.
Fixed some bugs.

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## More apps by CHIEHIRO HASHIZUME

- [Cat Shot](https://appshunter.io/ios/app/cat-shot/id348592286)
- [Planet simulation](https://appshunter.io/ios/app/planet-simulation/id356146219)
- [valistroke](https://appshunter.io/ios/app/valistroke/id362074391)
- [Rocats](https://appshunter.io/ios/app/rocats/id369652084)
- [World Cat Cup](https://appshunter.io/ios/app/world-cat-cup/id374225491)
- [Ham Race](https://appshunter.io/ios/app/ham-race/id380064370)

All apps by CHIEHIRO HASHIZUME: https://appshunter.io/developer/348592290

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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 2026-06-23.*