I don’t know why people are complaining
I have a Macbook Pro (Retina, 15-inch, Mid 2014) with 2,5Ghz i7, 16GB memory and Intel iris Pro 1539 MB Graphics card.
Of course I cannot play the game on full graphics, but I can play it on low with some medium settings. And the Graphics are still great.
So if you are hecitating to buy this game or not because you are scared the macbook will not support it… buy it! It is so worth it!
Dacheffe88 about XCOM 2, v1.0.2