DAT1 File

What are DAT1 files and how to open them

Are you having problems opening a DAT1 file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your DAT1 files.

What is a DAT1 file?

A .DAT1 file is a NeoRAGEx Savestate file.

NeoRAGEx Savestate files store a snapshot of the complete internal state of the NeoRAGEx Neo·Geo emulator so that emulation can be paused and later resumed exactly where it left off. These savestates capture all memory, CPU registers, graphics and sound processor states, and other emulator-specific runtime data. They are generated while a game is running under NeoRAGEx when the user uses the emulator's Save State feature.

The files are written by NeoRAGEx itself. They are intended for personal use to suspend and return to gameplay instantly. They are not usually interchangeable between different emulator programs, because each emulator tracks internal hardware state in unique ways.

Technical detail: files always begin with the ASCII signature NRXSTATE at offset zero.

How to open DAT1 files

Important: Different programs may use files with the DAT1 file extension for different purposes, so unless you are sure which format your DAT1 file is, you may need to try a few different programs.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Last updated: October 22, 2026

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