MSBT Editor

Modern Editor for Nintendo Files

The MSBT Editor is an open-source C# project providing a modern text editor for MSBT and BMG files. Style and functionality is heavily inspired by Visual Studio Code and uses Monaco Editor as the base text editor.

VS Code-like text editor for editing all supported text files, including helpful features such as search & replace, auto‑completion and hover help
Multi-tab support to freely split and rearrange current working windows
File-tree browser to browse and edit the content of binary archives
Support for most archive formats and compression algorithms to allow editing raw binary files right from within the editor
Compatible various games and consoles with the help of game-specific configurations to achieve bit-perfect file writes
Cross‑platform support for Windows, macOS, and Linux with a built-in updater

Screenshots & Features

Runs on Windows, macOS, and Linux

Multi‑tab support

Search & Replace

Auto‑completion & Hover Help

Additional Editor Tools & Options

Game Config Management

Media Preview Support

Supported File & Compression Formats

In Addition to MSBT and BMG files, the MSBT Editor also supports several archive formats and compression algorithms.

Category	Formats
Localization	MSBT, BMG, BTXT, Neverland Text
Archives	ARC, DARC, NARC, RARC, SARC, UMSBT, ZIP
Compression	LZ10, LZ11, LZ77, Yay0, Yaz0, ZLib, ZSTD
Other	BCSV, BYML, MSBP (read-only)

Check the documentation for a complete list of all supported file types.

Download & Installation Version 3.1.2

Pre‑built releases for all supported platforms are available below.

Windows

Available as installer and portable builds for both x64 and ARM64.

Installerx64 Portablex64

InstallerARM64 PortableARM64

macOS

Available as installer and portable builds for both Apple Silicon and Intel.

InstallerApple Silicon PortableApple Silicon

InstallerIntel PortableIntel

The macOS builds are not signed or notarized. When opening the app for the first time, macOS may block it. To run it, right‑click the app, choose Open, and confirm the dialog. If this doesn't work, you might need to allow it via System Settings > Privacy & Security. If nothing else works, the following command in the terminal may also help:

xattr -dr com.apple.quarantine MSBTEditor.app

Linux

Available as AppImage for both x64 and ARM64.

AppImagex64 AppImageARM64

The Linux builds are made using AppImage, a modern app container format for binary software distribution. Your Linux distribution will require FUSE to run AppImages. If the AppImage doesn't start, you might need to install FUSE first (please check the documentation for this!).
Before running an AppImage, you will also need to make it executable:

chmod a+x path/to/MsbtEditor-linux-x64.AppImage

Application updates and game configs can be downloaded and updated directly from within the editor.