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File editors · free

Edit your MU server without touching a .txt

Shops, boxes and events, spots and NPCs, commands, cash shop and the client: in the browser, in your server files' exact format. Upload your file and the editor recognizes it.

Open BG Studio Choose an editor
7Free editors
AllMU server files
0Installs
Works withLouisMSPROSSeMUMuEmuyour own server files

The essentials

Three editors for any server

The files you edit most, with an in-game view. Exported with the same columns as yours.

Shops
Shops editor
Any server

Shops

Your NPC shop, just as the player sees it

  • Real 8×15 inventory: drag items and see how it looks in game
  • Recognizes the format by itself: Louis, MSPRO, SSeMU, MuEmu or yours
  • Level, options, excellent, sockets and ancient with checkboxes
  • Uses your server's Item.txt if you have custom items
Open Shops Open in BG Studio
Event Item Bag
Event Item Bag editor
Any server

Event Item Bag

Rewards from boxes, events and monsters

  • Search 186 real boxes and events with their number and folder
  • Tells you what opens it: the item, the monster or the event
  • Simple or grouped boxes (MuEmu, SSeMU): it understands their sections
  • “Max everything”, bulk changes and start from scratch
Open Event Item Bag Open in BG Studio
Spots & NPC
Spots & NPC editor
Any server

Spots & NPC

Monsters and NPCs placed on the map

  • Click and drag on the minimap: no typing coordinates
  • NPCs, monster zones and single monsters, with radius and direction
  • One file per map (MSPRO, SSeMU, MuEmu) or with a map number (Louis)
  • Add the minimap as background and see exactly where each one lands
Open Spots & NPC ⬇ Minimaps (Maps.rar)

And also

More editors free

Editor MAKE
Editor MAKE/make and /makeset commands with item and option search.Open →
 Cash Shop
Cash ShopThe X shop: tabs and items with W Coin and Goblin Points.Open →
 Texture Editor
Texture EditorOpen the client textures (.ozj, .ozt…) and export them to PNG.Open →
 Client Editor
Client EditorThe client .bmd files: items, skills, texts and server list.Open →
 Balance Lab
Balance LabClass-vs-class damage and PvP and PvM skills. In beta.Open →

That easy

Your file in 3 steps

Upload your .txtOr drop it on the home page or in BG Studio: it's recognized and opens in its editor.
Edit it visuallyShop, box or map just like in the game. Your work saves itself in the browser.
Download and copy itThe .txt comes out with the same columns as yours. Copy it to your server and restart.

BG Studio

All editors in one single app

Tabs, recent files, Ctrl+K for everything and a sidebar your way. Install it as an app and use it offline.

Open BG Studio

Why use them

Made by an admin, for admins

AutosaveYour work is saved in the browser; with an account, in the cloud too.
Import your .txtLoad your server file and edit it visually.
Bulk editingLevel, options and values for a whole block or group in one click.
Excellent options with checkboxesTick the options and the number is calculated for you.
Visual mapsSpots & NPCs by clicking on the minimap.
PC and mobileNo programs to install. Or install BarGames as an app.

Minimaps (Maps.rar)

Images of every map to use as the background in Spots & NPC. So you see exactly where each monster goes.

⬇ Download Maps.rar

Pro Tools

Server diagnostics, Wizard, Reset System, Commands, NPCManager, Lucky Wheel, Invasions, Battle Pass, Starting character, Automatic events, Daily reward, Custom jewels and wings, Lua scripts and File converter.

See the Pro Tools

Learn

Video tutorials

Cómo Configurar el Sistema de Reset en Mu Online Season 6 🔥 Paso a Paso
Cómo Configurar el Sistema de Reset en Mu Online Season 6 🔥 Paso a PasoFebruary 23, 2026
Mu Online: Configurar Start Items Paso a Paso (Regalos de Bienvenida)
Mu Online: Configurar Start Items Paso a Paso (Regalos de Bienvenida)February 20, 2026

Missing an editor?

Tell us which server file you'd like to edit and we'll add it. Meanwhile, try the ones we have: they're free.

Open BG Studio Test servers