.RP9 File Extension
RetroPlatform Disk Image Archive
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What is an RP9 file?
Packaging format used by RetroPlatform, the technology used in the Amiga Forever and C64 Forever emulators; contains one or more disk image files (i.e. .ADF or .D64 files) and a manifest.xml file; compressed as a .ZIP archive, which is renamed to ".rp9."
RP9 packages are commonly used for Amiga and Commodore 64 (C64) games. They allow all the media to be contained within a single file, which allows for one-click download and playback.