I've just finished my first game on the Switch (~300 turns) and it runs like a dream. The game really feels like it was meant to be on the Switch from the start. It looks fantastic, sounds fantastic, controls incredibly well (the touchscreen is best of course, but with buttons on the big screen as well, the controls are very easy to get used to and not cumbersome at all).
The first review is very positive as well, a 94/100 from IGN.
This was my most desired game as soon as the Switch was revealed; I'm so happy it actually turned out well.
Anybody else picked it up?