It depends...
This game was somewhere between good and okay. It was worth playing all the way through: if you love history, then you will probably enjoy how the game goes through different settings and time periods. The guns were somewhat limited, but still fun to use. My macbook pro is a late 2011 model and while I havent touched the game in a while I dont remember having too much issue, except when you open the game may have to fiddle with the video settings to get it to work, but if you figure that out, its worth a try. I believe i bought this on sale, so my recommendation would be to give it a shot if you can find it on sale again.
BecauseIFeltLikeIt about Darkest of Days