What are the best exploration based games on PS4?

The enemy will pick up on your habits and react accordingly. For example, if you use tranq darts to knock enemies out, they will try to wake up their comrades at first. Do this for a couple of missions and they'll immediately run to sound the alarm when they spot someone knocked out. This way the game expertly keeps you out of the comfort zone, having the later missions feel as tense as the first.