OTR file format description

Many people share .otr files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .otr file can be edited, converted or printed with. On this page, we try to provide assistance for handling .otr files.

2 filename extension(s) found in our database.

.otr - Over the Reich Saved Game

The OTR game data files are related to Over the Reich. The OTR file is a Over the Reich Saved Game. Over the Reich is a 1996 strategy computer game for personal computers operating the Microsoft Windows operating system. The Over the Reich seems to be no longer supported.

Over the Reich
Game Data files
- / -
Over the Reich Saved Game related extensions:
Mahjong Titans Saved Game
Utawarerumono Game Video
ShadowFlare Saved Game
Animal Crossing: New Leaf Pattern
ChessBase Multimedia Baggage Data
Crysis Shader Data

.otr - IRIX Compiled File-type Rules Data

The OTR data files are related to SGI IRIX. The OTR file is an IRIX Compiled File-type Rules Data. IRIX is an operating system developed by Silicon Graphics (SGI) to run on the company's proprietary MIPS workstations and servers. The SGI IRIX seems to be no longer supported.

Data files
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IRIX Compiled File-type Rules Data related extensions:
Cloud Data Management Interface Domain Data
Rapidform XOR 3D Scan CAD Data
woodWOP Data
Molly Template
SAM Alignment Probabilities Data
Photodex ProShow Streaming Video

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

Can't open a .otr 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 .otr file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

itr, ktr, ltr, ofr, ogr, ort, ot, otd, ote, otf, otg, ott, ptr, tor, tr

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

TomeRaider 2 E-book
TheWord Old Testament Text Module
CIRS Transaction Data
Kettle Transformation Data
KeyTruss Truss Data
TCL Trace Output

Operating systems

DataTypes.net currently supports the following operating systems:

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

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DataTypes.net >> OTR file