Far Cry 2 (2008)

Your mercenary checks the route by holding up a paper map and a handheld GPS, even while driving, so reading directions means taking your eyes off the road. Guns visibly rust, jam and eventually break apart in your hands, which tells you about their condition without a percentage meter. When malaria strikes, the screen blurs and you reach for pills. It is rough around the edges, but few open-world games ask you to look this hard at your own kit.