There are plenty of things that make this game pretty immersive, the most important probably being its setting. You can feel that you're playing in a land devastated by the effects of war, plagues, monsters, and more; and it's always interesting to see how these affect the characters' behaviors. Geralt's detective-esque's dialogues are also intriguing to hear, they give a lot of insight about the world. On top of that, exploring grants you the chance to see very beatiful scenaries.
The music has been awesome so far, as well. Overall, I'd see The Witcher 3 as a very appreciative game, which of course I see why it's not going to be of the liking of a lot of people, I didn't like BotW much as I wanted for the same reason.
My bet with The_Liquid_Laser: I think the Switch won't surpass the PS2 as the best selling system of all time. If it does, I'll play a game of a list that The_Liquid_Laser will provide, I will have to play it for 50 hours or complete it, whatever comes first.
