.GRP File Extension

.GRP File Extension

File Type 1

StarCraft Graphics Group File

Developer Blizzard Entertainment
Popularity
4.2  |  17 Votes
Category Game Files
Format N/A

What is a GRP file?

Collection of frame images used for units, weapons, spells, wireframes, and menu graphics within Starcraft; each object may contain anywhere from a few to several hundred frames.

More Information

GRP files may be extracted from the .MPQ file. They are referenced by StarCraft, but can be edited with a third-party editor.

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Programs that open GRP files

Updated September 18, 2015
File Type 2

SmarterMail Group File

Developer SmarterTools
Popularity
4.0  |  6 Votes
Category Data Files
Format Binary

What is a GRP file?

File created by SmarterMail, an email server application used to host Web email access; stores one day's worth of email messages for a mailbox folder; used for storing a database of email messages for a particular user.

More Information

GRP files are created with filenames that reflect the date of the email messages. For example, the file 2011-01-01.grp contains all email message data for January 1, 2011 for a particular mailbox folder. GRP files are saved with a corresponding ".cfg" file, which has the list of all email messages and the GRP file where each message is located.

Programs that open GRP files

Windows
Updated February 11, 2011
File Type 3

Windows Program Manager Group

Developer Microsoft
Popularity
3.5  |  6 Votes
Category System Files
Format N/A

What is a GRP file?

Defines a group of programs listed in the Windows Start Menu; i.e. "Main," "Games," "Accessories," or other folder.

More Information

If a GRP file becomes corrupt, you can restore it to Windows default settings by using the Program Manager. Select File→Run, then type "setup /p" and press Enter. This will rebuild the GRP file using Windows default settings.

Programs that open GRP files

Windows
Windows Program Manager Group Converter (grpconv.exe)
Updated February 15, 2007
File Type 4

Ken Silverman's Build Engine Group File

Developer Ken Silverman
Popularity
3.5  |  2 Votes
Category Game Files
Format Binary

What is a GRP file?

A GRP file is a game data file used by games that are built with Ken Silverman's Build Engine. Example games include Duke Nukem 3D and Shadow Warrior. GRP files can store various kinds of game data, such as graphics, audio, and map information. They are saved in a simple uncompressed format and therefore can easily be modified to change gameplay.

More Information

The group format is an older format and therefore support for it is limited. There are still tools such as kgroup and kextract which can be used for extracting the contents of the files and for repacking the files with updated content. These programs are part of Ken Silverman's Build Engine.

NOTE: Since there are several branches of Ken Silverman's engine, there may be slight variations in GRP files. Therefore, you should look into the group file format documentation for the specific game you have.

Programs that open GRP files

Updated August 12, 2016

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