guide
PvP in MU Online
In MU, damage against players is not the same as damage against monsters: the server applies percentages per class and per type of fight. The configuration files show those percentages exactly, and they explain why some classes feel stronger in PvP.
General percentages
| Season 3 | Season 4 | Season 6 | Season 20 | |
|---|---|---|---|---|
| General PvP damage (%) | 100 | 80 | 75 | 30 |
| General PvM damage (%) | 100 | 80 | 75 | 100 |
| Duel damage (%) | 60 | 80 | 60 | 60 |
| Chaos Castle damage (%) | 50 | 80 | 50 | 50 |
| PvP damage reflect (%) | 100 | 30 | 75 | 50 |
Values found in the GameServerInfo files of each emulator package we analysed. They are not official rules: every server sets its own.
PvP damage by class
Each class has its own damage percentage against players. The lower it is, the more that class's damage is cut in PvP:
| Season 3 | Season 4 | Season 6 | Season 20 | |
|---|---|---|---|---|
| Dark Wizard (%) | 100 | 50 | 100 | 30 |
| Dark Knight (%) | 100 | 30 | 100 | 30 |
| Fairy Elf (%) | 100 | 100 | 100 | 30 |
| Magic Gladiator (%) | 100 | 50 | 100 | 30 |
| Dark Lord (%) | 100 | 50 | 100 | 30 |
| Summoner (%) | 100 | 60 | 100 | 30 |
| Rage Fighter (%) | — | — | 100 | 30 |
Values found in the GameServerInfo files of each emulator package we analysed. They are not official rules: every server sets its own.
PK and duels
| Season 3 | Season 4 | Season 6 | Season 20 | |
|---|---|---|---|---|
| Time to lower PK level (s) | 3600 | 3600 | 3600 | 3600 |
| PK cannot open shop (1 = yes) | — | 0 | 0 | — |
| Points to win a duel | — | 10 | 10 | — |
| Max duel time (min) | — | 10 | 20 | — |
Values found in the GameServerInfo files of each emulator package we analysed. They are not official rules: every server sets its own.
How to read this
A Dark Knight at 30% PvP damage and a Fairy Elf at 100% does not mean the elf hits harder: the percentage offsets raw damage differences between classes. That is why servers tweak these numbers often to balance PvP.
FAQ
Why is my PvP damage lower?
The server applies a PvP damage percentage per class and per type of fight. In the files we analysed, the values are in this page's tables.
What is the best PvP class in MU?
It depends on the version and the server's balance: per-class percentages change between emulators and every server adjusts them.
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Sources
- GameServerInfo - Character.dat and Common.dat from the Season 3, 4, 6 and 20 emulators
Demand snapshot: SNAP-20261001-1040 · Data extracted on 2026-10-01