Onet Monster Duo: board puzzle

Contains adsIn-app purchases
3.5
41 reviews
10K+
Downloads
Content rating
Rated for 3+
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About this game

Discover a new addiction! Inspired by the classic Mahjong game here is a brand new game with cute monsters and mystic forest.

MONSTER DUO is a matching puzzle game in the genre of onet (originally called "Shisen Sho").

HOW TO PLAY ONET
(the rules are rather similar to classic Mahjong)
• Find two identical tiles.
• Match them if they can be connected with 3 or less straight lines.
• Clear the whole game board.


*** FUN AND CASUAL ***
Easy to learn and pleasurable game for all ages. Smooth effects for block puzzle game! Many different cute creatures help you to enjoy the game.


*** TONS OF UNIQUE LEVELS ***
Original and unique Onet mechanics. Many levels full of fun and amazing challenges!


*** SAVE THE WORLD ***
Tiny monsters are magic spirits of the Holy Trees. Open all the minions to revive the mystical forest.


*Please remember the main rule of Onet*
Find the same tiles that can be connected with THREE or less straight lines!

MONSTER DUO is completely free to play, but there are optional in-app purchases available.
Updated on
Apr 24, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
No data collected
Learn more about how developers declare collection
Data isn’t encrypted
Data can’t be deleted

Ratings and reviews

3.2
37 reviews
JJ
July 29, 2024
I enjoy this game, but it's too short and very repetitive. There are only ~12 different puzzles which are circulated and only 3 stages to complete. Needs more puzzles and stages! Pros: unlimited lives, plenty of in-game rewards and optional video rewards, cute graphics and the few puzzles are fun and challenging. Cons: mandatory victory ads, sometimes puzzles are unsolvable from the get-go, hint and rocket buttons too close to tiles and are easily tapped accidentally, too few purple chests.
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Aletha Bell
September 22, 2023
I liked it (at 1st). It's different & keeps your interest. However, challenges are so challenging at times, that it's impossible to complete the level UNLESS you watch 3 or 4 ads or pay money. It needs a clock for TIMED play. ALSO, it's not fair that your monster price goes up from $300 to $700 in the second part...yet you have to wait 9 hours for 50 free coins. The treasure chest prizes don't increase to match the $400 inflation price for a monster. I'm about fed up. 🤬 Original but frustrating
2 people found this review helpful
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Wingzofthe Dragon
June 14, 2025
a lot of these apps by this particular company; when you go to find out a little more about the app first. it secretively downloads it without you even being aware. I can't tell you how many times I have had delete these from my phone
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What’s new

- Fixed "No ADS" issue
- Compatibility with Android 14