What is Idle MU: classic MU Online in the browser

Idle MU, at idle.mu, is an independent MU Online Season 6 Episode 3 server that you play in your computer's browser. It is the classic PC MU, with the same old client, opened in a Chrome or Edge tab.

Idle MU in facts


Game	MU Online, the original PC client
Version	Season 6 Episode 3
Where it runs	Chrome or Edge on PC (Windows, Mac and Linux), with nothing to install
First launch	About 80 MB, kept by the browser; after that it opens in seconds
Auto farm	Free, with Idle; it keeps going with the tab minimized
Classes	Dark Knight, Dark Wizard, Fairy Elf, Magic Gladiator and Dark Lord
Level	400, plus 200 Master Levels, with reset
Events	Eight, automatic, every day: Blood Castle, Devil Square, Chaos Castle and invasions
Guide	Over 500 items, 300 monsters and 30 maps in the guide
Price	Free, and not pay-to-win: the store sells VIP and timed boosts, never items, jewels, levels or resets
Site languages	Portuguese, Spanish and English

What Idle MU is

A PC MMORPG, played with mouse and keyboard.
Classic MU Online, in the Season 6 Episode 3 version.
An idle MU: the Idle tool makes your character hunt on its own, even with the tab minimized. That is where the name comes from.
A game that runs in the browser, with no download: the classic client opens inside the tab. See MU Online in the browser.
A server with a website and game in Portuguese, Spanish and English (you pick the game language with the flags on the game screen), with ranking, events and tutorials.

What Idle MU is not

It is not a mobile app. We have nothing to do with Android or iOS games with similar names, such as "Idle MU RPG". Idle MU is played on PC and is not in any app store.
It is not a game "inspired" by MU. It is the original MU Online client, with the usual graphics, maps, monsters, events and keys, not a remake.
It is not the official server. MU Online is a trademark of Webzen Inc., and this project has no ties to it.

Where to find Idle MU

There is only one address: https://idle.mu. The game opens at idle.mu/jogo and the community is on Discord. To reach the team, write to [email protected].

Frequently asked questions

Is Idle MU a mobile app?

No. Idle MU is a MU Online server for PC that runs in the browser. It has nothing to do with mobile apps with similar names.

Is Idle MU made by Webzen?

No. It is an independent project, with no ties to Webzen, the owner of the MU Online brand.

How do I play?

Create your account at idle.mu, click Play now and the game opens in Chrome or Edge on your PC, with nothing to install.

How much does it cost?

Nothing. Creating an account and playing is free.