How to make a .iso file out of a torrent file

Hey guys,
I just downloaded a video game off f the internet, and its a torrent file, which I need to be made into a .iso file. I know I can use imgburn through parallels, but I have no Windows OS disc for parallels to work. Does anybody know if there is a way that I can get this torrent file( which is essentially a lot of little files) converted into a .iso file so I can burn it and play it? Much thanks for whomever takes the time tp help me with my problem