You can run two Roblox games side by side on the same PC, but you need separate accounts and the right setup

Running two Roblox games at once on your PC is possible, but it requires more than just opening the game twice. Roblox is designed to run one instance per account, so you'll need either two separate user accounts on your PC or a virtual machine to launch a second game window. The method you choose depends on your PC's hardware and what you're trying to do.

The simplest approach for most people is to use two Windows user accounts on the same PC. This lets you log into Roblox with different accounts simultaneously, each in its own game window. If your PC doesn't have the resources for that, or if you need both games on the same Windows account, a virtual machine is the backup option—though it's slower and more complicated to set up.

Key Takeaways

  • The easiest method is creating a second Windows user account on your PC, then logging into Roblox with a different account in each one.
  • You can switch between the two game windows using Alt+Tab or by clicking the taskbar, so both games run at the same time.
  • Your PC needs enough RAM and GPU power to handle two Roblox instances—at least 8 GB of RAM is recommended, though 16 GB is safer.
  • If you only have one Windows account, you can use a virtual machine like VirtualBox to run a second copy of Roblox, but this will be slower and more resource-intensive.
  • Both games will run in windowed mode for this to work smoothly; fullscreen mode will minimize one game when you switch to the other.

Using Two Windows User Accounts (the easiest method)

The fastest way to run two Roblox games at once is to create a second Windows user account on your PC. This is built into Windows and doesn't require any extra software. Go to Settings > Accounts > Other people, click Add account, and follow the prompts to create a new local account (you don't need a Microsoft account, though you can use one). Once the account exists, you can switch to it without logging out of your main account.

After you've created the second account, log into it and install Roblox if it's not already there. Open Roblox on the second account and sign in with a different Roblox account than the one you're using on your main Windows account. Now switch back to your main Windows account (use the Windows key + L to lock, then click your account on the login screen, or use the user switcher in the Start menu). Open Roblox on your main account and sign in. Both games will now be running at the same time.

To switch between the two games, use Alt+Tab to cycle through open windows, or click the Roblox icon in your taskbar to see both instances. Make sure both games are running in windowed mode, not fullscreen—fullscreen will minimize the other game when you click into it. You can change this in Roblox settings under Graphics.

Checking Your PC's Hardware Requirements

Running two Roblox games at once uses significantly more RAM and GPU power than running one. Roblox itself is not demanding, but two instances together can strain older or budget PCs. Before you try this, check how much RAM your PC has: right-click This PC or My Computer on your desktop, click Properties, and look for the total RAM listed under "Installed RAM."

For two Roblox games running smoothly, you should have at least 8 GB of RAM, though 16 GB is safer if you're also running other programs like Discord or a web browser. Your GPU (graphics card) also matters—integrated graphics like Intel UHD or AMD Radeon will work, but dedicated cards like NVIDIA GTX or RTX will perform better. If your PC struggles with two instances, close other programs (especially web browsers with many tabs open) to free up memory.

You can check your GPU by opening the Device Manager: right-click the Start button, select Device Manager, and expand Display adapters. If you see something like "Intel UHD Graphics" or "NVIDIA GeForce," that's your GPU. If you're not sure whether your PC can handle it, try running one game and watching your RAM usage in Task Manager (Ctrl+Shift+Esc) to see how much is left over.

Using a Virtual Machine if You Only Have One Windows Account

If you don't want to create a second Windows user account, or if your PC doesn't support it, you can use a virtual machine to run a second copy of Roblox. A virtual machine is software that simulates a separate computer inside your PC. The most common free option is VirtualBox, which you can read from Oracle's website. This method is more complicated and slower than using two Windows accounts, so only use it if the account method won't work for you.

After installing VirtualBox, you'll need to create a virtual machine with its own copy of Windows (you'll need a Windows installation file or license). This takes time and disk space—typically 20 to 30 GB. Once the virtual machine is running, you can install Roblox inside it and run it alongside the Roblox on your main PC. The downside is that the virtual machine will use a lot of your PC's resources, and games may run slower than they would on a native Windows account.

Unless you have a specific reason to use a virtual machine, the two Windows accounts method is much simpler and faster. Virtual machines are useful if you're testing something or need complete isolation between the two instances, but for just playing two Roblox games, a second account is the way to go.

Setting Both Games to Windowed Mode

For both Roblox games to run at the same time without one minimizing when you click the other, both must be in windowed mode rather than fullscreen. In fullscreen mode, Windows automatically minimizes other windows when you click into the fullscreen game, which defeats the purpose of running two at once.

To change this, open Roblox and go to Settings (the gear icon in the top right). Click Graphics and look for the Fullscreen toggle or dropdown. Turn it off or set it to Windowed. Do this on both game instances. You can resize the windows by dragging the edges, or arrange them side by side so you can see both games at once. Some players prefer to use Borderless Windowed mode if it's available, which looks like fullscreen but still allows switching between windows.

Managing Performance While Running Two Games

Running two Roblox games at once will use more CPU, GPU, and RAM than running one. If you notice lag, stuttering, or slow performance, you can improve it by closing unnecessary programs. Open Task Manager (Ctrl+Shift+Esc), click the Processes tab, and look for programs using a lot of CPU or memory. Close web browsers with many tabs, Discord, or other background apps you don't need right now.

You can also lower the graphics settings in Roblox to reduce the load on your GPU. In Settings > Graphics, lower the Graphics Quality Level slider, turn off Shadows, or reduce the Render Distance. These changes won't affect gameplay much but can free up significant GPU power. If one game is more important than the other, you can lower the graphics on the secondary game while keeping the main one at higher settings.

If performance is still poor, your PC may not have enough resources to run two games comfortably. In that case, you may need to upgrade your RAM or GPU, or stick to running one game at a time.

Troubleshooting Common Issues

If one of your Roblox windows closes unexpectedly, it's usually because Windows ran out of available memory. Check Task Manager to see how much RAM is in use—if it's at or near 100%, close other programs and try again. If the second account won't log in, make sure you're using a valid Roblox account (not the same one as your main account) and that you have an internet connection on both accounts.

If both games are running but one is very slow or laggy, it's likely a GPU bottleneck rather than RAM. Lower the graphics settings on the slower game, or close other GPU-intensive programs. If you're using integrated graphics (Intel UHD or AMD Radeon), performance will be noticeably lower than with a dedicated GPU—this is normal and expected.

If you can't create a second Windows account, your PC may be using a Microsoft account that restricts local accounts. You can still create a Microsoft account as the second user, or contact your PC administrator if you're on a work or school computer.

Frequently Asked Questions

Do I need two Roblox accounts to run two games at once?

Yes. Roblox ties each game instance to a single account, so you'll need two separate Roblox accounts to run two games simultaneously. You can create a second account for free on the Roblox website.

Will running two Roblox games at once get me banned?

No. Running two games on two separate accounts is not against Roblox's terms of service. However, using automation or bots to control both games, or using one account to play two games at once, may violate the rules. Stick to manual play on two separate accounts and you'll be fine.

Can I run two Roblox games on the same account?

Not easily. Roblox is designed to allow only one active session per account at a time. If you try to log in on a second window with the same account, the first window will be logged out. You need two separate accounts to run two games simultaneously.

How much disk space do I need for two Roblox games?

Roblox itself takes about 2 to 3 GB of disk space, but both instances share the same installation files if they're on the same Windows account. If you're using two separate Windows accounts, you'll need about 4 to 6 GB total. A virtual machine requires significantly more—20 to 30 GB for the virtual Windows installation alone.

What's the minimum RAM I need to run two Roblox games?

Technically, 4 GB of RAM can run two Roblox games, but performance will be poor if you're running anything else. For smooth gameplay on both games, aim for at least 8 GB of RAM, and 16 GB if you want to run other programs at the same time.