Opening a GS4 File

The GS4 file type is primarily associated with Genecyst.

GS4	File extension: GS4
	File type:	Save State 4

What is a GS4 file?

GS4 files mostly belong to Genecyst. Genecyst is a Sega Genesis system emulator released in 1997. The number behind the .GS# file extension indicates the save state (current game state at time of the save) number. Savestates are compatible with the Gens emulator and probably all of its variants. This should apply to any saved Sega Genesis games played in an emulator.

How to open GS4 files

You need a suitable software like Genecyst to open a GS4 file. You need a suitable software like Genecyst to open a GS4 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your GS4 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a GS4 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online GS4 Text Viewer

Choose your .gs4 file to analyze

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Online File Viewer

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Unable to Open a .GS4 File? Quick Solutions:

GS4 files can come from different programs and aren't universally openable.

Identify the Source: If you play retro games, it is likely a Sega Genesis emulator save state. Otherwise, it may be a proprietary data file from a developer.
Check the Header: Inspect the first bytes in a text editor or hex viewer.
- "PK" indicates a standard ZIP archive.
- Readable XML/JSON suggests a configuration file.
- Unreadable binary data usually implies a raw emulator save state.
Use the Original Software: The original program is usually required. Try Genecyst or similar Sega Genesis emulators, or ask the sender if uncertain.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for GS4 File Extension

Identifier:

Hex:, ASCII: GST (provided by TrID database)

Related files:

g64, gs0, gs2, gs1

a gs4 Save State 4 is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with GS4 files

Associate the GS4 file extension with the correct application.
Update your software that should actually open save state 4s. Because only the current version supports the latest GS4 file format. Search, therefore, e.g. on the manufacturer website after an available Genecyst update.
To make sure that your GS4 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .GS4 file online - secure, fast, and no downloads needed.