Getting started

Carbon is a Windows desktop launcher for Roblox. It downloads and manages a verified Roblox client, supports multiple instances, saved Roblox accounts, FastFlags, mods (client asset packs), themes (launcher appearance), plugins (launcher extensions), and Discord integrations. It does not inject into games or patch the Roblox executable.

You do not need a Carbon website account to install or play. Signing in unlocks updates, invites, and profile features on carbonlabs.dev.

What Carbon does (and does not do)

Carbon does	Carbon does not
Launch and manage one or more Roblox clients	Modify game scripts or memory inside a running experience
Patch on-disk client assets when you enable mods (sounds, textures, cursors, etc.)	Guarantee compatibility with every Roblox update. Re-test after channel updates
Store Roblox login cookies locally (encrypted when you enable vault encryption)	Share your Roblox password with Carbon servers
Reskin the launcher UI with themes	Change in-game UI unless you use a mod that replaces client files

Recommended reading order

1. Installation: MSI, setup EXE, or PowerShell one-liner; integrity checks.
2. Quick start: First launch, sidebar tour, first game session.
3. File locations: Where mods, themes, logs, and configs live on disk.
4. Pick features from Using Carbon (dashboard, accounts, launcher, mods, themes, …).
5. When you want to author packs, use Mods and Themes developer sections.

Get the app

• Download page: Latest Windows build, SHA-256 hashes, system requirements.
• Changelog: What changed between releases.

Community and support

Check Troubleshooting if something breaks. Still stuck?

• Discord: Questions, betas, and community packs.
• GitHub: Bugs and feature requests (launcher is open source).

When asking for help, include your Carbon version (Settings → About), Windows version, and the relevant lines from logs/ (see file locations).