I've seen this here and there in this forum. People saying they'll have to get a new Mac to play Civ VI. I want to remind everyone that no, you don't have to get a new Mac; You can get a used or refurb one. My Mid 2012 model plays Civ VI just fine. (And if you get a refurb from Apple, it comes with the full, standard warranty, which can be upgraded to AppleCare.)
Something that's really bothered me about the Mac product line the last five years, especially in the case of the MacBook Pros, is that performance, especially for gaming, does not scale properly with price or older-to-newer generations. Any Mac with a 1 GB or better discrete graphics chipset (AMD or nVidia; not Intel) made within the last five years should play it just fine. One would think that all the MacBook Pro models would come with discrete chipsets, but for some reason, they don't. Buying a new Mac without one is a waste of money. For that matter, so is buying a new Mac with one, particularly if you just want to use it to do something like play Civ VI.
Something that's really bothered me about the Mac product line the last five years, especially in the case of the MacBook Pros, is that performance, especially for gaming, does not scale properly with price or older-to-newer generations. Any Mac with a 1 GB or better discrete graphics chipset (AMD or nVidia; not Intel) made within the last five years should play it just fine. One would think that all the MacBook Pro models would come with discrete chipsets, but for some reason, they don't. Buying a new Mac without one is a waste of money. For that matter, so is buying a new Mac with one, particularly if you just want to use it to do something like play Civ VI.