Zelda BotW for me. Has the best blend of character models, art style, physics, and environment design. It's just a delight to look at.
Runner up would probably be XCX...though only for landscape and scenery. I reeeeeally didn't dig the character models. I remember being terrified of using that black haired loli girl because her model was so creepy looking, and would get mad whenever the game forced me to use her.
NNID: Zephyr25 / PSN: Zephyr--25 / Switch: SW-4450-3680-7334