A RAR Repack is a type of file archive that is used to compress and distribute large files, such as games. RAR (Roshal ARchive) is a proprietary file format that is used to compress and archive files, making them smaller and easier to download. A Repack is a re-packaged version of a game, which has been compressed and re-distributed. In the case of Receiver 2017 Editor Version RAR Repack, the game has been compressed into a RAR file and re-distributed, often to reduce the file size and make it easier to download.