MuMat.net — MU Online Season 2
Start playing MU Online on MuMat
MuMat is an upgraded MU Online Season 2 server with resets, Grand Resets, events and a player market. Create an account and start with our new client.
An auto-updating launcher, improved graphics and a strong focus on performance. Adjust resolution, graphics quality and the FPS limit in the launcher to suit your computer.
MU Online on Linux: our new client runs through Wine. On MacBook, trying CrossOver is possible; macOS compatibility has not yet been verified. MU Online on Linux and Mac: setup guide
Slot Distribution for Castle Siege Participation
A total of 14 players took part in Castle Siege.
The GM slot was awarded to the character Andris.
The remaining 8 slots were distributed among the other participants.
Distribution results:
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MadDevil
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Shadow
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Jenots
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Edza
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Lapsa
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EBLAN
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Vendigo
-
Forgottenz
Thank you all for taking part!
Test: help us check the updates
Try the new features on the Test server and help us check them before they reach Main. Character progress, items and master points on Test are separate from Main.
How to join:
1. Start your usual Launcher.exe and let it update the files. You do not need a separate Test client. Download: https://mumat.net/en/downloads
Test website: https://high.mumat.net — your Test account, characters, quests, Storage and Market.
2. Select Test in Project. Main and Test keep separate login profiles.
3. Enter your Test account details, click Sign in / Refresh, select Game server and your character, then PLAY. If you cannot access your account on Test, contact support with your character name.
What we are testing:
• Master skill trees for five classes: Grand Master, Blade Master, High Elf, Duel Master and Lord Emperor. After the third class quest, press A to open the tree. Reset Points is free during testing, so you can try different builds. Contact support with your Test character name if you need master points for testing.
• Additional skills: Expansion of Wizardry, Strike of Destruction, Multi-Shot, Flame Strike, Gigantic Storm, Chaotic Diseier and the elf's Recovery (restores SD). The corresponding books and crystals drop on Test. Check learning, casting and damage.
• SD as a reserve after HP: damage uses HP first, then SD. Check damage, survival and recovery in PvE and PvP, skills and displayed stats.
• Character and item stats: compare the C window with item tooltips and the changes when equipping items. Check defense, item requirements, wing and cape bonuses, weapons and master enhancements.
• Guild quests: Shift+Q → Guild. There is a daily quest and timed Easy / Normal / Hard quests. The guild master or assistant starts them; guild members are needed. Easy has two random maps with 600 monsters each. Normal has either two maps with 1,000 monsters each and 5 upgrades to +13, or two with 750 each and 10 upgrades. Check shared progress, the timer, participation and rewards.
• Personal website quests in the game: Shift+Q. At Lumen the Barmaid in the Lorencia bar, accept a quest, submit items from Storage, choose a prize and complete it.
• Talismans of Mobility and Resurrection: saved destinations after logging in again and switching game servers. Check returning to the marked location and the place of death.
• Lahap: combine bundles of 10+20 or 10+10+10 into a bundle of 30 jewels, and split bundles back.
• New Battle Royal version: registration and rules — Shift+B. Check matches, rewards and restoration of saved items and Zen after leaving.
Feature help is available in Esc → Guide.
If something goes wrong, press F11. The report is sent the next time you start Launcher. Tell support your character name, what you did and what happened. For balance reports, include your class, resets, map and skill.
Update: new features
New in the game:
- Faster loading after teleports
- Guild storage: in the game (Warehouse → Storage → Guild) and on the website
- Market: exact item search and Zen ⇄ WCoin exchange
- Event schedule with bosses (Shift+E)
- Reset right from the game (Shift+R)
- Chess
- Options: show or hide player names and monster HP bars
Everything is available now. Details on each feature are in the game: press Esc → Guide.
Master Tree and SD
The reworked SD system is enabled on Test. HP is spent first; when HP reaches zero, the remaining damage goes to SD at a 1:1 ratio. This applies to all damage. A character stays alive while either HP or SD remains; a hit exceeding their combined total kills immediately. Each WCoin potion adds 65% of maximum SD, capped at 100%.
Master Trees are available through A for Grand Master, Blade Master, High Elf, Duel Master and Lord Emperor.
The C window and tooltips use values received from the server. They show the actual final attack rating (ATR) and defense rating (DSR). If the target's DSR is higher than the attacker's ATR, the hit chance is 5% and damage that gets through is reduced by 70%. This rule is the same in PvE and PvP. If the attacker's ATR is higher than the target's DSR, the hit chance is calculated between 10% and 100%. The Invincibility node protects against the triggering hit and subsequent direct attacks for 5 seconds, with 60 seconds between activations. Periodic poison damage continues.
Also on Test:
- The Reset Points button to the left of Learn resets learned Master Tree nodes and returns the points actually invested. Resets are free during testing. The future price of 250 WCoin and quests to earn points are not enabled yet.
- For testing, a one-time total budget of 220 Master Points, including points already invested, has been set for characters who, at the time of the grant, had either more than 50 resets or at least one Grand Reset with fewer than 50 current resets.
Not all S9 skills have been ported to the client: having a node does not by itself mean its cast is available.
You can use the same account on Main and Test at the same time. There is no need to log out of Main to try the update on Test.
Test environment: high.mumat.net
Slot Distribution for Castle Siege Participation
A total of 12 players took part in Castle Siege.
The GM slot and additional -100 quest progress were awarded to the character Lapsa.
The remaining 6 slots were distributed among the other participants.
Distribution results:
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Bemziegs
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Drawout
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Mana
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Atriebejs
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saule
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Vendigo
Thank you all for taking part!
Test updates
Happy Hour, Golden Colossus, Loren Deep and Death King Boss have been added to the event schedule, together with total live counts for Golds, White Wizard, Death King, Golden Colossus and Red Dragon when supplied by the server. Unknown values are shown as “--”.
Battle Royal opens with Shift+B: the event list, registration and cancellation, participants, results, rules and claiming available rewards. This update does not enable Battle Royal on Main.
Market now has a wCoins exchange tab for buying, selling, listing and removing offers. The exchange fee is zero on Test.
Zen can be transferred between the current character and the web balance. Supported payments first use web Zen, then take any missing amount from the current character. Funds held by other characters or in the normal warehouse are not used. Balances refresh next to the action buttons.
Fixed opening Reset after using Market/Warehouse. The event schedule and the Event/Reset menu entries have a more convenient layout.
The balance and server mechanics changes in this article apply to Test and are not enabled on Main.
Client fixes and updates
A client update is available for Main and Test. Install it through the Launcher to get fixes to Helper, the interface and graphics.
- Updated materials for Castle Siege, Blood Castle, Arena, Devil Square, Chaos Castle, Land of Trials and Barracks, as well as many monsters, NPCs and some equipment. Model sizes, geometry and game effects have been preserved.
- Reduced unnecessary memory and rendering work. Removed screen layers of sand and fog on Tarkan and several other maps; some persistent effects now update at the game logic rate rather than every frame.
- Helper filters item names and numbers more precisely, adds Symbols of the matching level to an incomplete stack even when the inventory is full, and automatically repairs eligible equipment when low durability is reported. Settings now have an exact delay in seconds, clearer buttons and a reset to defaults.
- Fixed a case where Helper repeatedly tried a failed pickup and stopped attacking.
- Fixed automatic buffs during attacks and BK combos in Helper.
- Fixed DL Earthshake, both manually and through Helper, when Dark Horse is used from the inventory.
- Ctrl+number shortcuts persist after logging in again. Party invitations support Enter and Escape; Personal Shop price confirmation and cancellation have been fixed.
- Updated labels for Zen operations and the Storage/Warehouse switches. Fixed repair button positions on Full HD and maximum durability display with the limit of 255.
- Fixed a case where the client ignored a server position correction. Fixed cleanup of repeatedly removed objects and closing the Chaos Castle window when a ticket is unavailable. The reconnect window shows connection and diagnostic status.
- Spanish and Portuguese movement tables now match the selected server.
Client updates do not transfer Test balance or server mechanics to Main.
Slot Distribution for Castle Siege Participation
A total of 6 players took part in Castle Siege.
The GM slot was awarded to the character EBLAN.
Thank you all for taking part!
Cashback & updates
Epoch 5 Season 3 cashback has been credited. The coins have already been added to current balances, including accounts that were online.
You can check the credit in your account on the website. If XShop still shows the old balance, close and reopen the shop.
Updates since 7 October
- In-game market and storage. Both are now available on Main through the new client. Open Market at Lala in Noria or Lumen in Lorencia, with item filters and inventory controls.
- Graphics and interface. Aida, Kanturu 1 and Kalima textures have been updated. Trading and storage windows, both themes and layouts at 800×600 have been improved.
- MU Helper. Settings, skill bindings and hunting now recover correctly after a brief connection loss. Hold Attack repeats the Basic Skill at a chosen point, with configurable direction switching.
- Controls. Fixed missed quick right-clicks when selling to NPCs, returning items from a completed Chaos Machine mix, and the Spirit of Dark Horse/Raven Helper filters.
- Performance. Optimized rendering in Aida, Kanturu 1 and scenes with many characters. Fixed explicit FPS limits while preserving attack speed and game logic. Background windows default to 30 FPS and minimized windows to 25 FPS.
- PK. The penalty for uncleared kills now also reduces maximum HP by the same percentage as attack and defense.
New features on Test: help us test
Update through Launcher and choose Test in the server list. The test server website is high.mumat.net. These features are already enabled on Test and are not yet activated on Main:
- In-game resets. Press Shift+R or type /reset to view requirements and tasks. To perform actions, visit Pasi in Lorencia at 118,113 and open Reset. Test task completion and submission, available task replacement/removal, and the reset itself. A successful reset returns you to character selection; log back in and check the result.
- Chess. Bring a second player to the table in the Lorencia bar, near 122,125, and sit in opposite chairs. The first participant sets the stake in kk; both confirm the start. You can use 0kk for your first test. Click a piece and its destination square. Test moves, the clock, finishing and resigning, and returning after a connection loss. Esc hides the board; leaving the game requires confirmation.
- Event schedule. Press Shift+E to see event states and timers, plus Castle Siege information. Compare the displayed times with actual event opening and start times; the window refreshes automatically.
- Shared Zen for market and resets. On Test, current-character Zen is used first, followed by web Zen. The Zen button in Warehouse/Storage withdraws web Zen to your character. Enter amounts in kk. Test balances, confirmation and cancellation, market purchases, and reset charges.
Please also test market and storage on both servers and the new MU Helper settings. Report issues through the corresponding website support, including server, character, time, steps and actual result. For interface issues, include the window resolution and a screenshot.
The current common client version is 2.4.4. Start Launcher and let it update; a full client download is not required. Use Check files to verify or repair files.
Update
Today's update is live. The BETA client has been updated to 2.1.17.
PK penalties
- Each uncleared PK kill reduces physical and magic attack power and defense by 10 percentage points, up to a maximum penalty of 90%. Existing uncleared PK kills also count.
- The penalty decreases as you clear PK by killing monsters. Clearing one PK kill now requires approximately six times as many monster kills.
- Allocated character stat points are preserved. The penalty is applied in combat calculations.
- PK clear on the website now costs more: every next kill costs 50kk zen more than the previous one (1st kill 50kk, 2nd 100kk, 3rd 150kk…). For example, 3 kills cost 50kk + 100kk + 150kk = 300kk.
- Each character can use PK clear on the website only once every 24 hours.
Talismans
- Talisman of Mobility now supports Kalima, including Hidden Kalima.
- Talisman of Resurrection now supports Kalima and Castle Siege, Crywolf, Barracks and Refuge maps.
- Returning to Land of Trials requires access: the area must be open to everyone, or your guild or alliance must have permission. Access is checked before teleporting.
- Saved-location tooltips now show the correct map name even after moving to another map.
BETA client
The character window C now shows your current PK attack/defense penalty. A PK status icon also provides a hover explanation. Both disappear once the penalty is cleared.
Start Launcher and let it update the client before entering the game. A full client download is not required.

