I meant Carcassonne, XCOM, and Hearthstone. (One could make an argument for Pinball Arcade, since it uses classic tables, but I feel like the game experience is probably different enough to call it more than a straight port.)
I would say the only one that wasn't developed mobile-first was XCOM (and it shows -- tap targets are smaller, and there's lots of scrolling text and wasted screen space). Hearthstone was developed simultaneously for iPad and PC (they share an interface; the iPhone version is somewhat cramped); Carcassonne is a board game but the iOS version [0] is an excellent rendition of the game that makes great use of the touchscreen while adding a good one-player mode.