2026.07.27 Update Notes | MonMon Masters Service Center
MonMon Masters Service Center UPDATE NOTE
2026.07.27 Update Notes


Hello, this is the MonMon Masters Development Team.

We would like to express our deepest gratitude for the warm attention and love our Masters always show toward MonMon Masters. This v1.3.8 update brings the "Tournament Event" to add exciting new competitive fun, along with new MonMon. We have also prepared a variety of growth convenience improvements and balance adjustments so that Masters can enjoy the game even more comfortably.


📢 v1.3.8 Content Update Notice

The new version (v1.3.8) containing new content and convenience features has completed app store review, and a "no-maintenance store update" has now been distributed without any separate server maintenance.

We recommend visiting the store you use (Google Play Store / Apple App Store) right now to update the game to the latest version.


[Content Open Schedule

  • All update content except for new MonMon and Tournament Event: Applied immediately upon completing the app update from the store
  • New MonMon, Tournament Event content: Opening on 07/27 at 02:30 (PDT) / 05:30 (EDT)




Tournament Event




A new "Tournament Event" is being held where Masters can prove just how powerfully their precious MonMon have grown.

The highly anticipated first tournament will take place in the "MonMon Training Tournament"!


* Schedule Notice: The first tournament will officially open on July 28 at 00:00 (UTC+0). (The entry button will not be visible in-game before the tournament begins. The "Tournament" entry button will be activated below the Event button in the top-right corner of the main screen at the time of opening, so please take note.)

* Generous rewards can be earned based on the ranking achieved through fierce competition.

* Special rewards that honor your prestige as a Master will be distributed at varying levels based on your final ranking achieved through fierce competition. In particular, you can obtain the powerful new Runestone [Agile] for the first time through this tournament's rewards!


Reward Collection: After the event concludes and rewards are settled, any unclaimed rewards will be safely delivered through your "Mailbox (Unclaimed Rewards)," so feel free to participate without worry!


3 New MonMon Released

New MonMon have been discovered — 2 of Legendary grade and 1 of Epic grade — ready to take on new adventures and content challenges.


MonMon Storage



A new "MonMon Storage" is being added to relieve the frustration of running out of storage space when welcoming new MonMon one after another.


It provides an extra dedicated storage space where you can separately keep MonMon you are setting aside for future development.


System / Convenience Improvements


Attendance Reward Expansion: The attendance reward board has been expanded to a maximum of 180 days. Visit every day to grow your MonMon with generous rewards.

Major Level Enhancement Convenience Improvements

"Auto-fill materials" and "Batch level enhancement" features have been added for MonMon level enhancement, enabling much faster and more comfortable growth.


Balance Adjustments and Reward Revamp


Goblin Territory Dungeon Reward Revamp


The base drop Gold has been adjusted, while a new "Gold Pouch" reward has been added. (The total expected Gold acquisition amount remains the same as before.)

The drop rate for Mystery Eggs has been significantly increased, and rewards have been added for Advanced and Rare grade MonMon to drop.

As the weight of the above rewards has increased significantly, Ancient Eggs that previously dropped have been removed from the acquisition list.

Mine Drop Rate Adjustment


"Ancient Egg" reward rate at the highest mine level adjusted from 3% → 1.5%

[Director] Kang Message


I would like to sincerely thank all the Masters who always show such love for MonMon Masters. Regarding the currency balance adjustments included in this update, I would like to offer an apology and honestly share the design intent behind these changes.


To get straight to the point: the purpose of this revamp is not to reduce the total amount of Ancient Eggs obtainable, but to diversify the acquisition routes.


We wanted Ancient Eggs to be obtainable from a variety of places — the market, events, Club Raids, the Club Shop, and more — but we felt that the disproportionately large amount obtainable from the mine was diminishing the value of other acquisition routes. As a result, every time we designed new content, we repeatedly ran into issues where it clashed with existing routes or threw off the economic balance. Therefore, starting with the newly added "Tournament Event," balance adjustments were necessary to broadly distribute Ancient Egg supply sources across the various new content we plan to release going forward.


In addition, we have received a lot of feedback that the supply of low-grade MonMon — used in what players call "fodder farming" (raising 1–3 star MonMon for use as materials in developing other MonMon) — was not smooth in the Goblin Territory dungeon. With this revamp, 2–3 star MonMon can now be obtained directly from the Goblin Territory, and in the process of fully restructuring the reward slots for that dungeon, Ancient Eggs were also removed as part of the overhaul.


However, I feel a deep sense of responsibility as Director for not being able to lay out this long-term expansion plan in a thorough and complete way from the start, and instead allowing it to feel like a reduction in specific acquisition sources. I sincerely bow my head in apology.


For now, it may be disappointing to see the numbers for certain routes go down, but we will continue to expand supply sources so that the more diversely you enjoy the game, the more rewards you can obtain from a wider variety of routes. New egg supply sources are also being prepared in the new content to be added in mid-August, and the development team is working hard to bring it to you.


We have prepared a small compensation as an expression of our apologies regarding this matter.


* Reward contents: Energy 2,000, Continuous Battle Ticket 150, Gems 100


Bug Fixes and Optimization


Club Raid Reward Drop Error Fix


An issue where Skill Books and MonMon Eggs were dropping more frequently from the Lord Lake box than the intended balance has been fixed.

MonMon Skill and Combat Malfunction Fixes


An issue where Ilecbul's skill target was intermittently applied incorrectly has been fixed.

An issue where Doblin's stealth effect was intermittently failing to activate has been fixed.

Continuous Battle Logic Improvement


An issue where battles were intermittently ending in unintended ways during continuous combat has been fixed.

Global Stat Buff Application Error Fix


While the global stat buff non-application issue was fixed in the last update, an additional issue was identified where the buffs only became active after playing "Tamer League" once after logging in. This has now been fixed. Global stat buffs (Arena tier, Temple of Guardian, region clear badges, etc.) will now apply correctly immediately upon login without any conditions.


Response to Hacks and Illegal Program Users


Cases of unfair play using illegal programs have been continuously identified recently, and many Masters have sent in valuable reports. The development team takes this matter extremely seriously, and we promise to take the following strong measures to ensure that the efforts of all Masters who play fairly and honestly are respected.


We will thoroughly investigate the play logs of suspicious accounts, and if records are found that cannot be achieved through normal play, strong sanctions including permanent bans will be applied immediately.

We will continuously and transparently share the status of sanctions against illegal program users with our Masters.

Beyond simple user sanctions, strong legal action and reporting at the company level will be taken against illegal program distributors.

Establishing a cross-verification system through server data validation (currently being worked on as the top priority).

Furthermore, we are declaring the next 2 weeks as an "Illegal Program Intensive Crackdown Period," forming an internal task force team to respond with full force. Your reports as Masters are a tremendous help in creating a clean MonMon Masters. To that end, a dedicated reporting channel has been newly created within the Official Discord, and a meaningful event for Masters who submit reports is also being prepared — we ask for your interest and participation.


We will continue to improve to ensure that the efforts of all Masters who play fairly and honestly are given the respect they deserve.


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

We hope you'll show off your strength to the fullest in the newly opened Tournament!


Thank you.

— MonMon Masters Development Team