I think it's better to include portable consoles as well. Some exclusives like Pokémon, Fire Emblem and Tearaway deserve to be mentioned.
My favourites would be:
2012 - Fire Emblem: Awakening
2013 - Pokémon XY
2014 - Mario Kart 8
2015 - Xenoblade Chronicles X
2016 - Pokémon Sun/Moon
2017 - The Legend of Zelda: Breath of the Wild
2018 - Super Smash Bros Ultimate
Last edited by Xephirus - on 20 January 2019