It wasn't until I noticed the two guys in camouflage and looked closer that I realised the first image on that blog post wasn't a photo. The mountains in particular are very realistic. The state of the art in games graphics these days is really quite impressive.

This blog post made me go back and play the game with my newly-arrived 1080 Ti.

In Full Ultra (every settings cranked up to 11) on my 3440x1440 monitor, this games runs smoothly at 70 FPS. And looks extremely realistic. I can't recommend it highly enough, even just for the sights.

The salt desert and the snowy mountains, the bog, the lush jungles, the sierras, the natural reserve… They all look amazingly realistic.