A native Linux/Windows/macOS Roblox Studio, written in Rust. Open, edit and save Roblox places, press Play and run them with real Luau, physics, characters and GUIs, without Wine.

Rustudio is very much a beta/prototype, I wouldn't call it a studio replacement quite yet.

This project is still early, so please please help!! Contributions are super welcome. Come hang out, ask for help or report bugs on the Discord.

• Editor: Explorer, Properties, Output, script tabs, move/scale/rotate tools with drag duplication and selection rotation, pop-out panels, terrain brushes and threaded generation, undo/redo, and Studio's menus and shortcuts.
• Files: .rbxl / .rbxlx places and .rbxm / .rbxmx models, plus project folders (*.project.json with plain files as the source of truth, Rojo/Argon sync rules, sourcemap.json, and File > Save as Project Folder… to turn any place into one).
• Play / Run: separate server and client, remotes, physics (rapier3d), R15/R6 characters with climbing and held jump, saved play settings, shift lock, sounds, tweens, 2D and 3D GUIs.
• Luau: the real Luau VM, with most of the engine API that real games call (see docs/ENGINE-GAPS.md for what's missing).
• Rendering: wgpu, with lighting, shadows, sky, atmosphere and materials tuned against Studio, incremental local lights and truss geometry. Meshes, FBX import and terrain are supported.
• Roblox account: open your places, load assets and avatars, use DataStores, and join Team Create sessions.

Download: prebuilt Linux (x86_64), Windows (x64) and macOS (Apple Silicon and Intel) builds are on the releases page. Unpack and run rustudio (rustudio.exe on Windows); on a Mac, move rustudio.app to Applications and the first time right-click it > Open (it isn't notarized). A downloaded copy checks for a newer release when it starts and can update itself (each download is checked against the release's SHA256SUMS); set RUSTUDIO_NO_UPDATE_CHECK=1 to turn that off.

Build from source: you need a Rust toolchain (1.85+) and a GPU with Vulkan (or OpenGL), or on a Mac, macOS 11 or later (Metal).

git clone https://github.com/rippelz/rustudio
cd rustudio
cargo build --release
./target/release/rustudio --demo           # sample scene
./target/release/rustudio my_place.rbxl    # open a place

On Windows (MSVC toolchain), run .\target\release\rustudio.exe instead, and see the Windows notes under Platforms.

On Linux you can install it for your user instead, so it shows up in your app launcher and runs as rustudio from anywhere:

./install.sh                # build, then install into ~/.local
./install.sh --uninstall    # remove it again

The install keeps working if you move or delete the cloned folder. ./install.sh --help lists the other options (--prefix, --no-build).

On first launch rustudio downloads Roblox Studio's built-in content (default characters, camera and control scripts, fonts, textures, sounds; about 60 MB) from Roblox's own CDN into ~/.local/share/rustudio/studio (%LOCALAPPDATA%\rustudio\studio on Windows). To get it ahead of time, or update it, run rustudio --install-studio-content.

If you already have Studio installed (e.g. via Vinegar), you can point rustudio at that instead:

export RUSTUDIO_STUDIO_DIR=~/.var/app/org.vinegarhq.Vinegar/data/vinegar/versions/version-XXXX

On macOS, download rustudio-…-macos-universal.zip from Releases (Apple Silicon and Intel in one), unzip it and move rustudio.app to Applications. It isn't notarized by Apple, so the first time right-click it and choose Open (or allow it in System Settings > Privacy & Security). To build the app yourself instead: tools/macos/bundle.sh (--universal for both architectures).

CI checks every push on Linux, Windows and macOS (where it also runs the tests and builds the app).

Windows is new, so a few things don't work there yet:

• Paths in this README are the Linux ones. On Windows, data and caches go in %LOCALAPPDATA%\rustudio (e.g. the Studio content download in %LOCALAPPDATA%\rustudio\studio) and settings in %APPDATA%\rustudio.
• Signing in is untested (the session cookie now goes through the Windows Credential Manager, like the publishing key).
• Video playback is off (libvpx/libopus are loaded only on Linux), and a native crash doesn't write a crash report (panics still do).

On macOS:

• Data and settings go in ~/Library/Application Support/rustudio, caches and crash reports in ~/Library/Caches/rustudio.
• With Roblox Studio installed (RobloxStudio.app), rustudio uses its content and downloads nothing.
• Shortcuts are Studio for Mac's (⌘ for Ctrl, ⌥ for Alt; the delete key deletes), ⌘Q asks about unsaved changes, and places and models open from Finder. The session cookie goes in the login Keychain, and deleted project files in the Trash.
• Video playback needs brew install libvpx opus. Gamepads aren't read yet.

Everything above works signed out. To open your own places or load private assets, sign in with your Roblox session: use the account button at the top right and Sign in with your browser (rustudio shows a code that you confirm on roblox.com, in whatever browser you're signed in to), paste the .ROBLOSECURITY cookie there, or put it in ~/.config/rustudio/roblox-cookie (macOS: ~/Library/Application Support/rustudio/roblox-cookie; chmod 600). rustudio stores it in your login keyring (the Keychain on macOS). Details are in docs/AUTH.md.

• docs/DEVELOPING.md: command-line options, tests, code layout
• docs/MECHANICS.md: every tuning number and where it comes from
• docs/ENGINE-GAPS.md: engine API that's still missing
• docs/TEAMCREATE.md: Team Create

rustudio is an independent project. It is not made, endorsed or supported by Roblox Corporation. "Roblox" and "Roblox Studio" are trademarks of Roblox Corporation.

This repository doesn't redistribute Roblox Studio or its content. Studio's built-in content (fonts, textures, avatar parts, ReflectionMetadata.xml) is downloaded from Roblox's own CDN onto your machine on first launch and is never redistributed here.

MIT OR Apache-2.0, at your option. Vendored crates in vendor/ keep their own licences.