Choose your accounts.
Launch together.
Select the accounts you want, paste a game link, and open them together. Send everyone into the first account’s server, or launch Roblox Home.
One selection. Multiple accounts.Choose your accounts.
Another account.
One click away.
Use the floating switcher to bring an instance forward. See your live sessions, group them by server, and mute each one individually.
Individual windows. Individual controls.Same accounts.
Same server.
Select one instance or several and rejoin their current servers. Tandem handles the queue, restarting each account in turn.
Return to a server, while it’s still available.
A closer look.
Choose who’s playing.
Select your accounts, paste a game link, and launch. Or open each account at Roblox Home.
Actual Tandem interface, shown with example accounts.
Your accounts.
On your PC.
Sign in with Roblox.
Add each account through Roblox’s own website, in a separate sign-in window.
Keep it local.
Account sessions stay on your computer, protected by Windows encryption.
No injection.
Tandem uses the Roblox launch protocol and Windows controls. It doesn’t inject into the game.
See how it works.
Four short walkthroughs.
01
Download, open Tandem, and add your Roblox accounts.
02
Select accounts and send them into the same game server.
03
Mute a session, enable quick switching, and close sessions.
04
Restart selected instances in their current server.
A few useful details.
What do I need to get started?
A Windows x64 PC and Roblox’s desktop player. Download the ZIP, extract Tandem.exe, and open Tandem before launching Roblox. Tandem is portable, so there is no installer.
How do I add my accounts?
Choose Add account in Tandem. Sign in on Roblox’s website in the separate sign-in window and complete any verification there. Repeat for each account you want to use.
Does Tandem inject into Roblox?
No. Tandem opens the installed Roblox player and uses Windows window and audio controls. It does not inject code, patch the player, or read or change Roblox process memory.
Can I always rejoin the same server?
The original server must still be available and accept the account. If it has closed, is full, or is restricted, a return may fail. Tandem stops the remaining queue if it cannot confirm the destination; it does not silently select a different server.
How many accounts can I launch?
You can select up to 20 different accounts per batch. The number your PC can run comfortably depends on its hardware and the experience. Launches happen one at a time, with adjustable spacing.
What happens when I close Tandem?
By default, closing the window keeps Tandem in the Windows system tray. Quit from the tray menu when you are finished. Sessions are managed by the running copy of Tandem, so close Roblox before quitting and reopening the manager.
Get everyone
in the game.
Tandem for Windows. Version 1.2.0.
Download TandemWindows x64 · 154.2 MB · Portable ZIPExtract the ZIP. Open Tandem.exe before Roblox.