I'm not sure the stimuli of open nature, danger, the elements isn't higher. One element that seems striking is how predictable and repetitive the modern stimuli are. If you can autopilot through a game, it must be quite constrained and your estimation/prediction abilities must be highly trained (or consistently doing 'good enough'). Movies, cartoons are all animated images that reward a good predictor, from image to image, from word to word. Open nature seems more chaotic, less... repetitive and predictable. I'm just saying, different kind of sensory stimulation...