Run multiple Roblox accounts at once.

Why players use MultiRBX

Trade on your main while alts grind in parallel. MultiRBX launches separate Roblox windows for every selected account.

Whether you run a trading main with storage alts or test a game with multiple QA accounts, switching tabs and re-logging wastes time. MultiRBX keeps every identity in a single roster with live avatars and one-click launch.

How it works

1. Install the extension via Load Unpacked in chrome://extensions.
2. Sign into each Roblox account on roblox.com and tap Add Account in the panel.
3. Open any game page, select accounts, and hit Launch — each opens in its own window.

Key features

• Parallel launch — multiple Roblox clients on one PC.
• Same-place join — every selected alt joins the game on your current tab.
• Instant switch — change active account without logout.
• Live roster — avatars and usernames in the panel.

Supported browsers

Chrome, Edge, Brave, Arc, Opera, and Vivaldi — any Chromium browser with unpacked MV3 extensions.