2026.09.01 Update Notes (eng) | MonMon Masters Service Center
MonMon Masters Service Center UPDATE NOTE
2026.09.01 Update Notes (eng)


Hello, this is the MonMon Masters development team.
We would like to express our deepest gratitude to all the Masters who have always shown MonMon Masters such warm interest and love. In this v1.6.8 update, alongside the highly customizable new 'Costume System,' the update's core main content — the 'Astro Defenders Large-Scale Collab Event' — comes to visit you! 6 new MonMon, including ones inspired by Astro Defenders, join the roster together, unfolding an even richer adventure.



📢 v1.6.8 Content Update Rollout Notice
The new version (v1.6.8), which includes new content, has passed app store review and will be released as a "no-maintenance store update," without any separate server maintenance. We recommend visiting the store you're currently using and updating the game to the latest version.



[Content Opening Schedule]


• Tamer Costumes, Announcements & Notifications, Field Overhaul, convenience improvements, etc.: Applied immediately once the app update is complete on the store

• 6 New MonMon (the 4 event MonMon are obtainable through their related events): Officially open Sep 2 (Wed) 1:30 AM PDT

• Chompea Chase: Sep 3 (Thu) 5:00 PM – Oct 3 (Sat) 5:00 PM PDT

• Lapis Exchange Event: Sep 3 (Thu) 5:00 PM – Sep 20 (Sun) 5:00 PM PDT


New System: Costumes

In the Tamer's Wardrobe, you too can change into any outfit you like.

  • Unlock Condition: Opens upon reaching Field 3-2
  • Freely mix and match items by slot — Head, Accessory, Top, and more — with new Costume items to be added continuously going forward.
  • A Basic Options feature is also included, letting you change base appearance elements like face and eyes.
  • The look you're wearing is reflected not only in the Lobby and Town, but also in the profile other Masters see.

Costume Shop

  • A new Costume Shop opens in the Market.
  • The product lineup rotates on a set cycle, with a different lineup of Costumes and Premium Costume Chests featured each round.
  • A new currency, Deco Coin, is added. Deco Coins can be earned from Tamers League weekly rewards, and obtaining a duplicate of a Costume you already own converts it into Deco Coins.

Collab Event: Astro Defenders
A collab event with Astro Defenders begins. Meet the collab MonMon through two events.

  • Find Angkong
    • Duration: Sep 4 (Fri) – Oct 4 (Sun) UTC+0
    • Unlock Condition: Opens upon reaching Field 2-3
    • Just by logging in over 7 days, you can claim the Stage 1 rewards and obtain the Legendary MonMon Angkong.
    • Completing Stage 1 unlocks Stage 2, where you can complete quests to earn additional rewards.
    • Quests reset once a day.

Lapis Exchange Event


  • Duration: Sep 4 (Fri) – Sep 21 (Mon) UTC+0
  • Unlock Condition: Opens upon reaching Field 4-1
  • Collect MonMon obtained as event rewards and exchange them onward to ultimately obtain the Legendary MonMon Lapis.
  • The Lapis Exchange Event can be joined after completing all 'Beginner Event' quests.


6 New MonMon
6 new MonMon have been discovered with this update. Each has a clear role where it shines, so set your goals according to your own strategy.




  • [Legendary / Attack / Mutant] Lapis
  • [Legendary / Attack / Mutant] Angkong
  • [Legendary / Defense / Machine] Batterpod
  • [Legendary / Control / Machine] Mechdove
  • [Epic / Attack / Machine] Mechrab
  • [Rare / Support / Plant] Carrit


New System: Announcements & Notifications

Announcements and notification features have been newly added so you can receive game news more conveniently.

  • Unlock Condition: Opens upon reaching Field 2-3
  • You can check Announcements directly within the game.

Field Experience Improvements
We've thoroughly refined the overall structure so that progressing through the Field feels smoother.

  • Field Difficulty Adjustment: Adjusted some Field battle stages that were too easy or too hard to a more appropriate difficulty.
  • Reduced Number of Field Stages: Adjusted the number of battles in each region to cut down on repetitive stretches.
  • Added [Next Battle] Button: Move straight to the next battle or the next region from the battle results screen.
  • Added Field Battle Recommended Teams: Reference the team compositions of other Masters who have cleared that battle, and load them directly if you'd like.

Early Experience Improvements
We've reworked the early-game flow so that Masters starting MonMon Masters for the first time can settle in more comfortably.

  • Fully reorganized the tutorial and early guidance.
  • Polished the prologue's presentation and dialogue.
  • Growth convenience features such as Instant Level Up and Batch Runestone Upgrade are now naturally introduced early on.


Convenience Improvements

  • Adjusted Battle Pass Unlock Timing: The Battle Pass unlock condition has been changed to reaching Tamer Level 15. This adjustment ensures you'll encounter the Battle Pass at a point where you can make full use of it. Masters already using the Battle Pass can keep using it regardless of level.
  • Chat Improvements
    • Expanding/collapsing the chat window and switching channels now work more smoothly.
    • Removed the feature that automatically posted to Global Chat when a Runestone reached max upgrade level. If you'd like to show off a Runestone, please post it directly using the share button on the Runestone detail screen.
  • Added Settings Options: Added Graphics Quality and Frame Rate Limit options. Please set these according to your device specs or battery situation.
  • Added Rate Info Shortcut: Added a button that lets you check Rate Info directly within the game.

Combat System & Balance Adjustments



Combat System Adjustment
For some MonMon skills that target based on lowest HP, the targeting criteria is changed from "HP percentage" to "absolute HP value."

  • This change affects the skills of Rabolt and Treaden.


Reward Adjustment
Deco Coins have been added to the Tamers League weekly rewards.

The new currency, Deco Coin, is added as a guaranteed item in the weekly rewards for every tier. Existing rewards remain unchanged, and the amount below is granted in addition.




Bug Fixes & Optimization

  • Fixed an issue where the [Revive Block] debuff failed to prevent a revive caused by the [Revive] buff.
  • Fixed an issue where, when applying [Taunt], a buff meant for the Taunt target was mistakenly applied to the MonMon that applied the Taunt instead.
  • A number of other bug fixes and optimizations have also been applied.





Official Discord Announcement

The MonMon Masters development team avoids chasing short-term results or one-off operations. Above all else, we believe the most important thing is ensuring that our Masters' precious time and love are never wasted — by building a "sustainable game" and a "MonMon Masters that players can trust and enjoy for the long haul."


The Official Discord is more than just a channel for announcements — we plan to build it into a comfortable space where the development team directly listens to and responds to the voices of our Masters. Special events and rewards exclusively for our Discord Masters will also be prepared on a regular basis.


Every piece of honest feedback our Masters leave behind is a precious foundation that helps us build a better game. We sincerely ask that you join us on the long journey ahead for MonMon Masters.



Join the Official Discord: https://discord.com/invite/nZuzRGNyQa (Click)


We will always stay true to our original vision and continue to strive to bring our Masters a polished and enjoyable MonMon Masters experience.


Thank you. — MonMon Masters Development Team