[quote name='buddynayr']Will the download work on my Mac? I know that it's steamplay, but will I be able to get the CD-Key from the download?[/QUOTE]
Best of my knowledge, i dont think it will work for mac since amazon has a mac version for 42 dollars.
Edit: On second thought i think it would work since u would just install it on steam anyways. There is no seperate version for the mac on steam. The requirement on steam page does list the requirements for mac and pc on one version of the game