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App Store Apps > Games > Board Games > Mahjong Duels Koo
Mahjong Duels Koo icon

Mahjong Duels Koo

by Cross Field Inc. · Games · Free
On the App Store since November 2023 · Data updated 2026-10-30

Mahjong Duels Koo is made and published by Cross Field Inc. AppBrain is an independent app data site and isn't affiliated with Cross Field Inc. The app name, icon, screenshots and description belong to Cross Field Inc. and are shown as published on the App Store.

0.00
0 reviews
Free

Mahjong Duels Koo Screenshot 1 of 5
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Screenshots by Cross Field Inc., from the the App Store listing
View on the App Store Also on Google Play

AppBrain's verdict

Last updated
January 30, 2026
Size
281.9 MB
Official page on the App Store

User feedback

Ratings and reviews on the App Store

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Store listing

By Cross Field Inc., from the App Store
Description by Cross Field Inc. Written by the developer, not by AppBrain. Click to read.
Mahjong Duels Koo is a Mahjong application game for 2 players.
This free app offers an exciting original rule set that is different from traditional mahjong, allowing you to enjoy an exciting game of Mahjong.
Share the new Mahjong fun with players from all over the world.

■Features
・A strategy that is deepened by its own rules!
Based on traditional mahjong rules, the application adds unique elements to create a completely new mahjong experience.

・Easy to play with short term settlement!
The original rules, which use only Pin and Honor tiles, make it easier to form a winning hand than in regular Mahjong.
This shortens the time required for a game and makes it easier to play without stress.

・It is easy to get high-scoring Yakus! High-risk, high-return matchups
The original rule using only Pin and Honor tiles guarantees that the hand will be at least Half Flush, and makes it easy to challenge Full Flush
This rule allows players to enjoy dramatic developments with high risk and high return.

・Original element "Shikigami"
Introduced the "Shikigami" skill, which further enhances the strategic nature of two-player games.
The strategy and reading of the game will be further expanded by the tactics used in various phases and the formation of the Shikigami.

・Heated Online Mode
With the Online mode, you can enjoy online battles with other players.
Aim for the top of the monthly ranking by accumulating victories.

・Gorgeous production
When Ron or Tsumo is played, the game adds a spectacular celebration of the player's achievement in the game. Each move is more vividly and dramatically colored.

Safety and technology

Found in the app by AppBrain
Price
Free
App size
281.9 MB
Content rating
Everyone

Technologies used by Mahjong Duels Koo

Releases

Updates seen on the App Store
Version
1.0.9
Launched
November 2023

No changelog data

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Also available on Google Play

Mahjong Duels Koo icon Mahjong Duels Koo
Cross Field Inc.
0.0
Free
10,000+

Rankings

App Store top charts

App Store Rankings for Mahjong Duels Koo

This app is not ranked

About the app and developer

About Mahjong Duels Koo

Mahjong Duels Koo is a games app developed by Cross Field Inc.

User Ratings

The app has no ratings yet.

App Information

Mahjong Duels Koo is freely available from the App Store. The app size is 281.88 MB. The latest version available is 1.0.9. The last update was on January 30, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on the App Store since November 2023.

Developer information for Cross Field Inc.

Cross Field Inc.

Address:

Frequently asked questions about Mahjong Duels Koo

Is Mahjong Duels Koo free?

Yes. Mahjong Duels Koo is free on the App Store.

Is Mahjong Duels Koo still available?

Yes. Mahjong Duels Koo is on the App Store, and the last update we saw was on January 30, 2026.

How large is Mahjong Duels Koo?

Mahjong Duels Koo is 281.88 MB.

Is Mahjong Duels Koo suitable for children?

App Store rates the content of Mahjong Duels Koo as suitable for everyone.

Who made Mahjong Duels Koo?

Mahjong Duels Koo was developed by Cross Field Inc. It is listed in the games category on the App Store.

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