Devil Square
Devil Square – Arena of Chaos
In the depths of the MU continent, hidden behind forbidden magic and sealed runes, lies the Devil Square—a nightmarish arena where endless waves of demons are summoned from the abyss. Originally created as a dimensional prison by the ancient wizards, it has since become a proving ground for warriors who seek glory, experience, and treasures through blood and fire.
Devil Square is one of the core PvE events in MU Online, offering rapid EXP, competitive monster-kill races, and rare loot drops. It’s ideal for leveling, farming, and testing your combat endurance.
🧭 How It Works
Once inside Devil Square, players face multiple waves of monsters, growing stronger with each stage. The goal is simple: survive, kill, and earn as many points as possible before the time runs out.
There’s no specific boss or objective—its all about raw monster killing efficiency. Compete against others in your bracket for top rewards.
📜 Entry Level Ranges (Age of Mu Online)
Devil Square is divided into difficulty levels based on your character’s level:
Devil Square 1: Level 15–80
Devil Square 2: Level 81–130
Devil Square 3: Level 131–180
Devil Square 4: Level 181–230
Devil Square 5: Level 231–280
Devil Square 6: Level 281–330
Devil Square 7: Level 331–400
Each square is tailored to suit the stats and damage output of players in that bracket, so you’re always fighting at an appropriate challenge level.
🗝️ How to Enter
To enter Devil Square, you must:
Craft a Devil’s Invitation by combining:
Devil’s Eye
Devil’s Key
Jewel of Chaos
At the Chaos Machine under “Regular Combination”
Speak to NPC Charon in Event square
Select the appropriate Devil Square based on your level and enter when the event opens.
Devil Square opens every hour, so be ready with your Invitation in advance!
💀 Monster Waves & Progression
Monsters spawn in Spots, getting stronger with time.
Higher waves mean better EXP, drop chances, and points.
Killing faster than other players increases your rank, and therefore your rewards.
🎁 Rewards:
Devil Square 1 - 6 1-10 Jewels
Devil Square 7 - 10 Jewels + 1000 Ruud Box