Mugen Christmas Update fixed plenty of bugs and added a brand new code. I have shared the update log, which covers all the fixes and changes announced in the Christmas 2025 Update.

Summary: The Mugen Christmas Update focuses on stability and progression fixes, resolving multiple issues related to Infinity mode, NPC behavior, combat interactions, tutorials, gifting systems, and purchases. Several softlocks and collision problems have been patched, and core systems affected by players leaving or loading slowly have been corrected. Additional fixes are planned, alongside a holiday code shared by the development team.
Mugen Christmas Update
Boss and NPC Fixes
• Fixed bosses randomly disappearing, caused by players leaving and cleanup logic affecting active NPCs
• Added an exception to ensure live NPCs are no longer removed unintentionally
• Onboarding NPC no longer disappears randomly, resolving the same underlying issue
Combat and Ability Fixes
• Applied a patch to Giyu’s ultimate that cancels damage if another player or external damage attempts to hit the same target simultaneously
Infinity Mode Fixes
• Fixed Infinity softlocking when a player loads slowly or leaves during the loading process
• Prevented players from getting stuck underneath Infinity boxes
• Turned off physics collision when joining the Infinity queue to avoid entry issues
Economy and Gifting Fixes
• Fixed Yen not being properly granted or gifted through purchases in private servers
• Fixed gifting issues related to the Nezuko Box
Tutorial and Progression Fixes
• Patched the Slayer tag not being granted during the tutorial
• Tutorial can now be repeated properly without breaking progression
Additional Notes
• More bug fixes are currently in progress
• The development team has shared a Christmas code as a holiday gift and thanked players for their patience
New Codes
• MERRYCHRISTMAS!
If you are new to the game, I highly recommend checking Mugen Codes for a head start.
So that covers my post on Mugen Christmas Update Codes, Fixes, and More.
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