
MASTERY BOX
Mastery Boxes are bonus reward boxes obtained by participating in Event Square activities. In the current server season, these boxes reward Goblin Points (GP) instead of Ruud, allowing players to earn an additional progression currency while participating in daily events.
Mastery Boxes are automatically delivered to your Gremory Case after completing eligible Event Square events.
TO GIVE YOU AN IDEA: WHAT IS RUUD?
Ruud is a special character-bound currency introduced in later MU Online seasons. Although it is not available in the current server season, it becomes one of the main progression currencies in future updates.
Unlike Zen or Jewels, Ruud cannot be traded or transferred to other players. It is permanently bound to the character that earns it.
Ruud is primarily obtained from Mastery Boxes earned through Event Square activities and is used to purchase powerful exclusive equipment from Priest James.
RUUD INFORMATION
| Category | Details |
|---|---|
| Current Season | Not Available |
| Currency Type | Character-bound Currency |
| Tradeable | No |
| Main Source | Mastery Boxes (Future Season) |
| Main NPC | Priest James (Future Season) |
| Purpose | Purchase Legendary Equipment, Muun Pets, and other Ruud-exclusive items. |

GOBLIN POINTS (CURRENT SEASON)
Since Ruud has not yet been introduced, Goblin Points (GP) temporarily replace Ruud during the current server season.
Instead of purchasing items from Priest James, players can spend Goblin Points in the Goblin Point Shop, which offers selected Goblin Point Boxes that is useful for the current season.
GOBLIN POINT INFORMATION
| Category | Details |
|---|---|
| Current Currency | Goblin Points (GP) |
| Replaces | Ruud |
| Shop | Goblin Point Shop |
| Additional Source | 1 Goblin Point for every 1 hour of online time in VIP Channels. |
AVAILABLE MASTERY BOXES
| Mastery Box | Status |
|---|---|
| Mastery Box (Minor) | โ Available |
| Mastery Box (Standard) | โ Available |
| Mastery Box (Greater) | Future Season |


HOW TO OBTAIN
Mastery Boxes are awarded after completing eligible Event Square activities.
| Source | Reward |
|---|---|
| Devil Square | Mastery Box |
| Blood Castle | Mastery Box |
| Chaos Castle | Mastery Box |
| Doppelganger | Mastery Box |
| Other Event Square Events | Mastery Box |
In addition to the normal event rewards (such as Jewels and other event rewards), players will also receive a Mastery Box as a bonus reward.
MASTERY BOX REWARDS
| Mastery Box | Goblin Point Reward |
|---|---|
| Mastery Box (Minor) | 3 GP + Random Reward: Jewel of Bless ×1 or Jewel of Soul ×1 or Zen |
| Mastery Box (Standard) | 5 GP + Random Reward: Jewel of Bless ×1 or Jewel of Soul ×1 or Zen |
| Mastery Box (Greater) | Future Season Content |
GREMORY CASE
| Feature | Details |
|---|---|
| Storage | Mastery Boxes are automatically delivered to your Gremory Case after completing an eligible Event Square event. |
| Claim | Open your Gremory Case to claim and open the Mastery Box. |
IMPORTANT NOTES
| Topic | Details |
|---|---|
| Future Content | Ruud, Priest James, and Mastery Box (Greater) will become available in future server season progression. |
| Current Season | Goblin Points temporarily replace Ruud and are used in the Goblin Point Shop. |
| Bonus Reward | Mastery Boxes are additional rewards and do not replace the standard rewards from Event Square events. |
| Gremory Case | Always check your Gremory Case after completing an Event Square event to claim your Mastery Box. |
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