AVAILABLE NOW
Windows
Windows 10 / 11 · 64-bit
Beginner-friendly setup wizard, region file import, guided network checks, desktop shortcut and optional local NAT Loopback helper.
Download NSG Installer NO STRESS GRID · OFFICIAL DOWNLOAD HUB
Your world
starts here.
Your first region, without the guesswork. Create an account, reserve your space on the map, install your simulator, and step into your world with Firestorm.
No experience needed. Follow the steps in order — the installer helps you along the way.
01 / CREATE YOUR ACCOUNT02 / RESERVE YOUR REGION03 / INSTALL & EXPLORE
START WITH THE RIGHT TOOL
Two downloads.
Two different jobs.
The NSG Simulator Installer runs your own region on your computer. Firestorm Viewer lets you log in, explore and visit that region. If you want to host and play, you will need both.
DOWNLOAD 01 · HOST YOUR OWN REGION
NSG Simulator Installer.
Our guided Windows setup helps you install OpenSimulator, import your reserved region file and understand the networking steps.
COMING SOON
macOS
NSG simulator installer
A dedicated macOS simulator setup is planned for the coming days. You can already use the Firestorm viewer on macOS.
In developmentCOMING SOON
Linux
NSG simulator installer
A dedicated Linux simulator setup is planned for the coming days. You can already use the Firestorm viewer on Linux.
In developmentAlready know OpenSimulator? Download the NSG simulator package (ZIP). This is the manual package, not the beginner installer. You still need a valid region reservation and configuration.
IMPORTANT · BEFORE YOU START
One simulator. One region.
NSG allows a maximum of one simulator and one region per user account and per public IP address. Your region must be reserved on the official map before it can register. Multiple accounts or additional simulators must not be used to bypass this limit. Contact NSG administration before requesting an exception.
YOUR FIRST REGION · STEP BY STEP
Follow the path.
We've got you.
Tick off each step as you complete it. Your progress is saved in this browser only. These checkboxes are a personal checklist, not an automatic verification of your account or reservation.
01
FIRST THINGS FIRST
Create your NSG account
Open the official No Stress Grid website. Create an account if you are new, then sign in. You must be signed in before reserving a region.
BEGINNER TIP Your website account and your region reservation belong together. Never enter your account password into a downloaded region file.
02
CLAIM YOUR PLACE
Reserve a free region on the map
While signed in, open the NSG map and choose a free, unprotected location. In the reservation form, enter your region name, desired size, simulator port and public IP address or hostname. Review the information, then select Reserve & Generate and wait for the confirmation.
WHAT DOES THAT MEAN? Your public IP is the Internet address other visitors use. Your local IP (often 192.168.x.x) is for your home network. They are not interchangeable. If a location is occupied or protected, choose another.
03
SAVE YOUR REGION DETAILS
Download your region .ini file
After reserving, use the map's Download region .ini action. Your browser will usually save this small configuration file in Downloads. Keep it: the installer needs it to set up the exact region you reserved.
BEGINNER TIP You do not need to open the file or write code. In the installer, simply choose the downloaded
.ini file. Do not replace its region UUID, location, size or hostname with random values.04
LET THE WIZARD HELP
Install the NSG simulator
Download the Windows NSG Simulator Installer above and open it. Follow the Easy Setup Guide, select your region .ini, choose an empty installation folder and let the installer download and prepare OpenSimulator. It also helps check the required .NET 8 runtime.
BEGINNER TIP The simulator is the software that hosts your land. Firestorm is the separate program you use to visit it. Do not close the simulator console while you want your region online.
05
HELP FRIENDS REACH YOU
Set up your router and ports
Open Network Setup in the installer. It helps identify your PC's local IP address, your router's likely gateway address and the simulator port shown in your region file. On your router, forward the required port(s) to your PC's local IP, and allow the simulator through Windows Firewall when appropriate.
BEGINNER TIP The router gateway is not always the router's web admin address. NSG does not open router ports automatically. Reserving your PC's LAN address in DHCP helps keep forwarding rules valid. If your provider uses CGNAT, normal forwarding may not be enough.
06
ONLY IF YOU NEED IT
Check the optional NAT Loopback fix
If Firestorm and your simulator run on the same Windows PC, outside visitors can enter your region, but you cannot enter it from home, your router may lack NAT Loopback. The installer includes an optional helper for this specific situation.
IMPORTANT Try without the fix first. It can change Windows routing, requires administrator approval and is not guaranteed to solve every network setup. Do not enable it just because the option exists.
07
BRING YOUR LAND ONLINE
Start your simulator
Use the NSG desktop shortcut or the installer's Start My Simulator action. Keep the simulator window open and wait for your region to register with No Stress Grid. If registration fails, compare the region name, UUID, coordinates, size and public host with your map reservation.
IF SOMETHING FAILS A message such as “no coordinate allocation” often means the reservation and the region configuration do not match. Return to the map and confirm that you downloaded the correct
.ini file.08
WELCOME IN-WORLD
Enter with Firestorm OpenSim
Download the OpenSim-compatible Firestorm Viewer for your operating system below. Open Firestorm, select or add No Stress Grid in the OpenSim grid manager, sign in with your avatar credentials and visit your region.
NSG grid address
http://grid.no-stress-grid.online/BEGINNER TIP In Firestorm, look for Preferences → OpenSim → Grid Manager if the grid is not listed. Choose an OpenSim build of Firestorm, not a Second Life-only download.
DOWNLOAD 02 · ENTER THE WORLD
Made for Firestorm.
No Stress Grid is optimized exclusively for the Firestorm Viewer (OpenSim edition). Use the official Firestorm website to obtain the current OpenSim-compatible build for your operating system.
Firestorm for Windows
Get the official Windows OpenSim-compatible viewer.
Official Windows downloads ↗Firestorm for macOS
Get the official macOS OpenSim-compatible viewer.
Official macOS downloads ↗Firestorm for Linux
Get the official Linux OpenSim-compatible viewer.
Official Linux downloads ↗These links take you to the independent official Firestorm website, not to an NSG-hosted viewer. If a platform page has moved, use Firestorm's main downloads page and select OpenSim.
Viewer compatibility & support: NSG is configured and optimized for Firestorm only. Other viewers may behave differently and are not officially supported. No Stress Grid is not responsible for bugs, rendering problems or incompatibilities arising from the use of other viewers. Firestorm is a separate third-party project.
ARCHIVE IMPORT POLICY
IAR imports require admin approval.
Want to bring an inventory archive (.iar) into No Stress Grid? All IAR import requests are reviewed by an NSG administrator before any import. Only an authorized administrator may perform an approved IAR load. Members must not attempt to load IAR archives themselves or bypass the review process.
Contact the NSG administration through the official community support channels. Explain what you want to import and wait for approval and instructions. Submission does not guarantee acceptance.
QUESTIONS? YOU'RE IN THE RIGHT PLACE.
Help, without the headache.
Do I have to reserve a region before installing?
Yes. Sign in to your NSG account, open the official map, reserve an available location and download the generated region .ini file. Your simulator must match that reservation.
Can I host more than one region or use another account?
No. The standard NSG limit is one simulator and one region per account and per public IP. Please ask an administrator before requesting an exception. Do not create extra accounts to bypass the rule.
Do I need both the simulator and Firestorm?
To host your own land and visit it, yes. The simulator runs the region; Firestorm is the viewer you use to log in. If you only want to explore NSG, you need Firestorm, not a simulator.
What if I cannot find the router settings?
Open the installer's Network Setup helper. It can show your local IP and a likely gateway, but not every router uses that address for its admin page. You may need the instructions supplied by your Internet provider.
Why can my friends enter my region but I cannot?
If your viewer and simulator run on the same Windows PC, NAT Loopback may be the issue. Try the optional helper only after confirming that your simulator works from outside your home network. It is not a universal fix.
Can I load my own IAR archive?
No. IAR imports are reviewed first and, if approved, performed only by an authorized NSG administrator.
When will the macOS and Linux simulator installers arrive?
Dedicated NSG simulator installers for macOS and Linux are planned for the coming days. Firestorm Viewer is already available for those systems through its official website.
Does NSG support other viewers?
NSG is optimized and supported for Firestorm OpenSim. Other viewers are used at your own risk; NSG does not accept responsibility for bugs specific to those viewers.
READY TO BUILD SOMETHING?
Your next chapter
is waiting.
Start with your account, claim your space, and follow the guided installer. One step at a time.