AT3 file format description

Many people often share .at3 files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .at3 files. To address this issue, we have created this page to offer assistance and guidance on handling .at3 files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .at3 files.

Our aim is to simplify the process and promote seamless use of the .at3 file format.

2 filename extension(s) found in our database.

.at3 - Airport Tycoon 3 Saved Game

The AT3 game data files are related to Airport Tycoon 3. The AT3 file is an Airport Tycoon 3 Saved Game. Airport Tycoon 3 is an airport simulation game for Microsoft Windows.

Airport Tycoon 3
Game Data files
- / -
Airport Tycoon 3 Saved Game related extensions:
3DCG Animation and Pose Data
ZDaemon Recorded Demo
Space Marine Localization Data
Painkiller: Overdose Model Data
Asphalt 8 Game Data

.atrac - Sony ATRAC3 Compressed Audio

The ATRAC audio files are related to Windows Media Player. The ATRAC file is a Sony ATRAC3 Compressed Audio. Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms developed by Sony.

Windows Media Player
Audio files
- / -
aa3, at3, atp, atrac3, oma, omg
Sony ATRAC3 Compressed Audio related extensions:
Microsoft PlayReady Audio
Nokia Phone Text Ringtone
FM-Kingtracker Sound Bank
G.722 Wideband Audio Data
Roland V-Synth Patch Data
Nintendo DS Sound Information Data

Naturally, other applications may also use the .at3 file extension. Even harmful programs can create .at3 files. Be especially cautious with .at3 files coming from an unknown source!

Can't open a .at3 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .at3 file extension is often given incorrectly!

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

a3, af3, ar3, at, ate, atr, atw, t3, ta3, wt3

Is it possible that the filename extension is misspelled?

There is a possibility that the .at3 filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .at3:

TADS 3 Compiled Game
Lightscape Material File
Audiotools Show Log
TaxACT 2013 Tax Return Data
PhysioBank Annotation File
Micrografx ABC FlowCharter 3 Document

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .at3 file format, then write to us! >> AT3 file