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I have a nvidia Geforce GTX260. I know it's old, but my System was more than powerful enough to run Crysis and GTA4 and RAGE so i didn't check the hardware requirements for this seemingly slow little strategy game where the camera is usually a few hundred meters away, and the main gameplay is dialogue choices.
I was very sad when i found after downloading that it wouldn't even start, stating that my driver is too old and i should install 361.75, when the newest driver for my card is 342.01
I know i can't expect to run the newest games on old hardware, but man... can't really see why you need that much graphics power for this game.