I'm trying to open files downloaded from torrent but the installer is saying it's in an unknown format. They are .bin files and Winrar won't unpack them so I'm confused.
You can open .bin files using Daemon Tools Lite or any application which knows how to mount a virtual drive. Sometimes, .bin files are accompanied with CUE files which tell the software what to mount and if you have such files, you will need to select them for mounting.