Opening a U2 File

The U2 file type is primarily associated with MAME.

U2	File extension: U2
	File type:	game ROM image

What is a U2 file

U2 files mostly belong to MAME. U2 files are Arcade ROM images that store game data for emulation.
They are used mainly with the MAME emulator for running arcade games.

They hold ROM data which includes game code and assets.

They can be a compressed archive for games originally designed for arcade machines and even for PlayStation systems.

Emulators like Pcsx2 may also process similar compressed archives.

FilExt.com note: This file must be handled by software that understands its format in order to run the game properly.

How to open U2 files

You need a suitable software like MAME to open a U2 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 U2 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a U2 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online U2 Text Viewer

Choose your .u2 file to analyze

or drag and drop it here

Online File Viewer

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U2 format details:

Why is it important to know the file format? This is the only way to find out which program to use to open the file. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. Knowledge is power - this also applies when dealing with unknown or faulty files. In the following you will find our evaluation of the U2 files:

The U2 file extension is not found very often and is used by a few programs, each with its own file format. The two most common formats are as follows:

• 35% of all U2 files use the same file format, which have the signature 1h5h. The contents of these files cannot be read by a human; only a computer program can interpret the data. U2 files are between 520 KB and 520 KB in size. The file type was primarily used more than 20 years ago. The files contain the following words: B%B!B, E^EZEg, KkOk, ]mMiM and xA+E/E!J%JcZ!. The file name jojoba_japan_nocd.29f400.u2 or jojoba_euro_nocd.29f400.u2 is characteristic of these files. Files like these are sometimes connected to jojoba, nocd, japan and euro.
• 25% of all U2 files use the same file format, which can be identified by the letters "FF 10 FB 10 48 48 4A 40 37 10 33 10 25 95 27 9D" at the beginning. They consist of unreadable binary data. The average file size is 520 KB with most files being between 520 KB and 520 KB in size. The keywords %h)l)> and HHJ@7 are typical for these files. An example of a file name is sfiii3_usa.29f400.u2 or sfiii3_euro.29f400.u2. Files like these are sometimes connected to sfiii.

The remaining 40% of all U2 files are files with no common format, the following 3 formats can be found: myiyw. The category is jojo, asia or redearth. If you want to find out what your U2 file contains, drag and drop it onto this page.