MU Online Patch Notes History: Every Major Update

October 13 patchLatestOctober 13, 2026
Halloween Event and 33rd Season Pass
- Official Webzen patch adds the Halloween Event, the 33rd MU Season Pass and the Maze of Dimension Event.
- Ends the Mastery and Mystery and Jewel Bingo events, and adds Polish language support.
Sources (2)
- Webzen official patch note, MU Online
- MMOHuts: MU Online Halloween event and 33rd season pass

Read the full patch notes

Our summaries cover the changes that matter to players and buyers. For every line item, read the developer’s own notes.

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FAQ

What is the latest MU Online patch?

The latest update we track is October 13 patch, Halloween Event and 33rd Season Pass, released October 13, 2026. The full list is on this page, newest first, and we re-check it regularly.

Where can I read the official MU Online patch notes?

The full notes are published by the developer: Webzen official patch note, MU Online. Each patch on this page also links the sources we used.

How far back does this MU Online patch history go?

It covers the major updates from October 13, 2026 onward, 1 patches in total. Small hotfixes are left out unless they change trading or buying.

We summarize from the developer’s announcements and name the outlet when a detail comes from a single report. Found an error or a missing patch? Tell us, and see our editorial policy.

MU Online Patch Notes History

Halloween Event and 33rd Season Pass

Read the full patch notes

Buying or playing MU Online?

FAQ

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