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You can unpack rar files with any extracting software of your choise and the mac os file explorer should be able to extract zip files.

Just google for mac os rar extractor or mac os open zip file. I'm sure you will solve it.

how do you unpack it? and i dont have a mac

Oh, I though so because you said .zip. The windows download is a .rar file. You can use freeware like 7zip to extract rar files. Or winrar, but it's a shareware

is there any other way to unpack it? and could you add a zip verison

is there any other way to unpack it if not please make a zip version