ISO problem

I know this is probably in the wrong section, but I could not find a more fitting section to post this in.

I downloaded a game that is supposed to have an ISO file in the torrent, i know it is supposed to have an iso file because I have used the same file on a different computer before.

My friends computer though downloaded the same torrent, but instead of an iso file there was a rar file. It did not have the required files + it did not have a disc, or ISO file.

He didn't have Daemon Tools Lite before he downloaded it, but I installed that for him, and i tried redownloading the torrent. I checked to see what was in the torrent before downloading the 2nd time and it still was a rar file instead of ISO.