Switch: 33.3 million
Mario Kart 8 Deluxe: 16.8 million
Super Mario Odyssey: 14 million
Super Smash Bros. Ultimate: 13.4 million
The Legend of Zelda: Breath of the Wild: 12.6 million
Pokemon Let's Go: Pikachu!/Eevee!: 12.2 million
Splatoon 2: 8.8 million
Super Mario Party: 7 million
1-2 Switch: 3.3 million
Mario Tennis Aces: 3.2 million
Kirby Star Allies: 2.6 million
Donkey Kong Country: Tropical Freeze: 2.4 million
ARMS: 2.2 million
Xenoblade Chronicles 2: 1.7 million
Bonus: Nintendo Labo: 2M+ combined
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454 List as Google Doc: https://docs.google.com/spreadsheets/d/1aW2hXQT1TheElVS7z-F3pP-7nbqdrDqWNTxl6JoJWBY/edit?usp=sharing
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/
Free Pc Games thread: https://gamrconnect.vgchartz.com/thread/248138/free-pc-games/1/