These are modified launchers that include an option for "allow multi-instance launching" .

Search for "Roblox" and find the handle.

A specialized tool that encrypts account data and uses "multiroll" to launch numerous instances. 2. Manual "Singleton" Bypass

Running allows you to play on several accounts at once from a single PC. This is popular for "farming" items, managing alt accounts, or testing games in a multiplayer environment. 🛠️ Popular Methods (2026) 1. External Launchers

You can use a tool like to force the PC to forget a game is already running. Open Process Explorer as an administrator.

Right-click and select to allow a second instance to open. 3. Native & Emulator Workarounds

Third-party launchers are the most common way to bypass the one-instance limit.