File Extension NSG

.NSG File

File extension: NSG
File type: Saved State


Notes about the NSG file extension:



To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened" (Windows 7) or "How do you want to open this file?" (Windows 10) if you double-click the file. There click on "More apps" and choose a suitable software to view such files on your PC or from email attachments.

The NSG file type is primarily associated with 'Nessie'. Nessie is an NES emulator for Windows. You can use it to play NES/Famicom games on your PC. The NSG file format changed during the Nessie development so some older NSG files may not open in newer versions of the emulator. The game files should work; just the saved state file format changed.

Detailed information for file extension NSG:


Primary association: Nessie

Other applications associated with file type NSG:

  • Notes (Database (Older Form)) by IBMThis was a Lotus product. Lotus was bought out by IBM. Lotus Notes and Domino are a fundamental component of IBM Workplace The Mime types used with this association are: application/vnd.lotus-notes. Related links: IBM Lotus Notes Wikipedia Page



To change file associations press Windows Key + X and then Apps and Features > Default apps > Choose default apps by file type. Invalid file associations could be the result of underlying issues within your Windows PC.

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