MOUSEDUCK
NOW PLAYING · Raising Poseidon

We makefun games.

Idle RPGs you can enjoy with one hand, for a long time. We are MouseDuck, the team behind Raising Poseidon and the Merge Ninja Star series.

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OUR GAMES

Our Games

8 MouseDuck games on Google Play. Download them now on Google Play or the App Store.

20M+Total downloads of MouseDuck games
8M+Merge Ninja Star 2 downloads
4.6Flagship game rating (★)
8Games on Google Play

CHARACTERS

Collect, dress up,
and level up

New costumes and companions arrive every season. Halloween, winter, Christmas — meet the ever-changing friends of Merge Ninja Star 2.

NEWS & COUPON

Coupons & News

CafeUpdates and events are announced first on our Naver Cafe!→ InfoHow to request account deletion2025.07.26 NoticePrivacy Policy in many languages (IT·DE·JP·CN·TW·TR·AR)2025.07.23 PolicyPrivacy Policy→

COUPON

Coupons you can use now

Enter a code in Settings → Coupon in the game and the reward arrives in your mailbox. New coupons are announced first on our Naver Cafe and Instagram.

ABOUT

Small beginnings,
long-loved games

MouseDuck is a mobile game studio that has been making idle and pixel-art RPGs for years. We listen to players and ship new content every two weeks.

Updates every 2 weeks

Every other Thursday we deliver new content and events.

Made with players

Our developers read the feedback from our community and put it into the game.

Pixel art & idle experts

Idle RPG know-how built since the Merge Ninja Star series.

20M+ downloads worldwide

Players in Korea, Taiwan, Vietnam, the US and many more countries enjoy our games on Google Play and the App Store.

Android & iPhone

All 8 games are available on both Google Play and the App Store.

New events every season

Halloween, Christmas and more — new costumes and events arrive every season.

Our journey

  1. 2015
    Legendary BlockMouseDuck's very first game
  2. 2016
    Pigeon RaisingA collection idle game loved by 1M players
  3. 2017
    MouseDuck Co., Ltd. founded · Merge Ninja StarCompany founded and our idle RPG series begins
  4. 2018
    Merge Ninja Star 2Our flagship with 8M+ downloads
  5. 2019
    Merge MinicarOur first step into merge idle games
  6. 2021
    Gun and GirlsCharacter-collecting idle RPG
  7. 2022
    Raising PoseidonIdle action RPG as the god of the sea
  8. 2026
    Lucky Ghost DefenseOur new lucky defense game

CAREERS

Let's make fun games
together

If you love games and get excited by player reactions, you are always welcome. Send your resume and portfolio to help@mouseduck.com.

Game DesignProgrammingArtQACS
Apply →

SUPPORT

Support

Where do I enter a coupon?
Open Settings (gear icon) → Coupon in the game and enter the code. The reward arrives in your mailbox.
I changed my phone. Can I move my data?
Link your account (Google / Apple) in Settings, then log in with the same account on your new device to continue.
I paid but didn't get my item.
Please close the game completely and start it again. If the item still doesn't arrive, contact us with your receipt and in-game UID.
When are updates released?
Raising Poseidon and Merge Ninja Star 2 are updated in turn every other Thursday. See our community notices for details.
I want to delete my account.
Please see how to request account deletion. Requests are processed within 3–5 business days.

Contact us

We answer all inquiries at help@mouseduck.com. Fill in the form and press send to choose how to send it. We reply within 1–2 business days (weekdays 09:00–18:00 KST).

When you press send, you can choose your mail app, Gmail or copying the address.

CAREERS

Apply to MouseDuck

Fill this in and we'll create the application email for you. Please attach your resume and portfolio files to the email.

Position
No mail app? No problem. On the next screen you can choose Send with Gmail or Copy address.

Inquiry

How would you like to send it?

Send with mail app Send with Gmail ↗
help@mouseduck.com

Using another mail service? Copy the address and message and send it from there.