Two file types are known to use the .rgp file extension. A brief description of these file types is listed below.
File Type #1 – RealArcade Game Package
.rgp files are associated with RealArcade games. The RealArcade.com portal was developed by RealNetworks to allow computer users to download arcade games on their PCs.
.rgp files come under the category of game files.
The .rgp file extension is recorded to be used by malware to spread infection. That is why it is recommended that you always scan any .rgp file that you receive as an email attachment before opening it.
Name of the program that can open an .rgp file
On a Windows system, you may open an .rgp file using the following program:
On a Macintosh, you may open an .rgp file using the following program:
File Type #2 ? Rosegarden Project File
The file extension .rgp is also associated with Rosegarden, which is a music editor and audio and MIDI sequencer. Little information is available on this file type, its behavior, or purpose.
If you are unable to open an .rgp file using the installed programs then try opening the file with a reliable third-party file extension repair program.