MU Bug: Online MMORPG

JAZ Development Role Playing In-app purchases

Classic MMORPG: resets, bosses, castle sieges & PvP events — on your phone.

Rating: 4.4; 63 ratings
Downloads: 1.7K+; on Google Play
Price: Free; In-app purchases
Updated: Oct 16; 2026 · v4.4

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About MU Bug: Online MMORPG

MU Bug: Online Classic Season 6 — Action MMORPG for Android

Immerse yourself in a medieval fantasy world with real-time combat, hundreds of creatures and legendary bosses, and a deep class system to forge your own playstyle.

⚔️ 7 CLASSES — Dark Wizard, Dark Knight, Elf, Magic Gladiator, Dark Lord, Summoner and Rage Fighter.
🔁 RESETS & MASTER RESETS — keep growing far beyond the level cap.
🏰 EVENTS EVERY DAY — Blood Castle, Devil Square, Chaos Castle, Illusion Temple, CryWolf and the weekly Castle Siege.
🐉 WORLD BOSSES — Kundun, Selupan, Medusa, Nightmare and more. Get alerts before events and boss respawns.
🐾 MUUN PETS — collect, evolve and equip companions that fight by your side.
🤝 GUILDS, PARTIES & TRADE — team up, trade with players and sell on the item bulletin board.
🤖 MU HELPER — built-in auto-play to keep leveling, even offline.

Explore Lorencia, Devias, Noria, Lost Tower and many more maps, each with its own monsters and secrets.

No intrusive ads. No forced pay-to-win. Just you, your build, and a world to conquer.

Are you ready to level up?

What’s new

Version 4.4 · Updated October 16, 2026

Features: 4th & 5th class evolution, 4th wings & Majestic Soul Tree Mounts: new Mount System with stat options and evolution Boss & PK: new Hallo Lord boss & penalty system against PK on novices Account: fast Google sign-in/registration & official Discord server Improvements: higher FPS on PC/mobile, touch responsiveness & PC VSync Fixes: EXP event rewards, character level display, Fenrir wings lag & Blessed options

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App details

MU Bug: Online MMORPG is a free Role Playing app for Android with 1,000+ installs on Google Play and a 4.4/5 average rating from 63 ratings. It was released on August 25, 2026 and last updated on October 16, 2026. It's developed by JAZ Development. It requires Android 7.0 or later. The app offers in-app purchases.

Category: Role Playing
Rating: 4.4 / 5 (63)
Installs: 1,744
In-app purchases: Yes
Ads: No ads
Version: 4.4
Requires Android: 7.0
Content rating: Teen
Released: August 25, 2026
Last updated: October 16, 2026
Developer: JAZ Development

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