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CHANGELOGS

July 2026

Update
30/07/2026 | 21:00

Updates and maintenance

This update requires you to update the game.

• Fixed a disconnection that could occur when unequipping the Dark Horse from the Dark Lord. • Fixed a bug that caused the client to close unexpectedly. • Fixed the display of magic damage in character attributes. • Fixed a bug in the ranking of parties against bosses. • Fixed the effect of the Ceto Vine set, which was not correctly granting the attack and defense buff. • Fixed a bug that sometimes caused bosses not to drop their reward. • Changed the color of the Alliance chat to better differentiate it from the Whisper chat. • Added a potion vendor NPC in Lost Tower 1. • Added a new boss: Flame Tantalo. It will appear in the background of Aida (at coordinates 130-090) every Thursday at 2:30 PM and 8:30 PM (GMT-3)
• Fixed a bug related to the Elf's auto-buff
• Ancient Potion crafting using rings has been enabled in the PC version
• From now on, the winner of Chaos Castle 5 and 6 will be the last character standing
• Fixed a bug with the Ice Storm and Decay skills during duels
• Various aspects of game security have been reinforced
• New controls for the 3D Camera have been enabled in the PC version
• From now on, bosses will have skills
• The Wars system is now working in the Mobile version
• The Ice Tantalo and Boss Queen will now drop 3 rewards

Update
23/07/2026 | 12:56

Adjustments and modifications

This update does not require you to update the game.

• Fixed the 6:45 AM White Wizard invasion
• Increased Lord of Kundun's HP and damage
• Reduced Lord of Kundun's respawn time to 11 hours (previously 12 hours)
• Increased Sorcerer Chief's respawn time to 3 hours (previously 2 hours)
• Added a chest in LostTower 1

June 2026

Update
16/06/2026 | 11:05

Update and maintenance

This update does not require you to update the game.

• The FIFA World Cup Event 2026 has begun (more info at https://99b.argmu.com/collectors)
• New colors have been enabled for the Artisan NPC in celebration of the 2026 World Cup
• A bug with the Blood Castle event door has been fixed (further testing with a high volume of players is needed)
• When a character reaches the maximum level in Arena, they will automatically leave the party if they are in one (this is done to free up the slot)
• The global message bug when encountering the Dalibor NPC has been fixed

May 2026

Update
22/05/2026 | 11:00

Maintenance and updating

This update requires you to update the game.

General
• 150 additional slots have been enabled across subservers 1, 2, and 3
• Monster movement and attack AI has been improved
• A notification now appears when someone kills a Golden Goblin
• The "Arena" map is now non-PvP with the following characteristics: for characters between levels 85 and 399, with a maximum of 150 resets. Upon reaching level 400, the character will be automatically teleported back to their starting map. This is done to free up spots in the Arena and prevent excessive farming.
• Changes have been made to the spots on the "Arena" map
• MU Coins have been renamed "ACoins" (only the name has changed; the value and functionality remain the same)
• Blood Castle 8: will now have the same drop rate as BC7, and will also drop Seals. Also, remember that an Ice Tantalum appears within BC8.
• Hell Maine Hero: will now drop 3 prizes instead of 2
• Ice Tantalo: ring drop removed (earrings remain the same)
• Disabled a method that allowed revealing the nicknames of characters inside Chaos Castle
• The drop rate of Jewel of Chaos has been reduced so that the jewel can begin to recover its value

Mobile
• Fixed the "screen cutoff" bug affecting some devices (Android)
• Improved the alternate interface controls
• Improved the map list in the teleportation window (Android)
• Improved the settings menu

March 2026

Update
05/03/2026 | 16:30

Maintenance and update

This update requires you to update the game.

General
• Fixed a bug with the game's language system
• Reduced the drop rate of farming items on subserver 4 (Non-PVP) by 50%
• Limited the maximum number of open Personal Shops to 50 on subservers 1, 2, and 3

Mobile
• Added Android 15 support (Android)
• Disabled autotargeting within Blood Castle, Devil Square, and Chaos Castle (Android/iOS)
• Fixed the whisper (iOS)
• Fixed the input when leaving a clan (iOS)
• Fixed the character creation bug in version S3 (iOS)
• Fixed the bug when setting item prices in the Personal Shop (iOS)