The Legend of Zelda: Breath of the Wild

This game places you in the middle of a massive land so detailed and beautiful that it truly depresses you that it's not real. There are areas where the temperature goes down or up and you have to deal with it. It rains and that affects things like climbing (speaking of climbing, you can climb almost every surface in the game). You have stamina which makes you have to think about how you will get from point a to point b. The game makes you think the way you would if you were truly in the wild.

On other notes, the story's great, the npcs and all fun, the combat is excellent, and the shrines are a real treat. But the best part about this game is the freedom you feel of simply being in the great outdoors where you can go wherever you want and do whatever you want.