The sales

The budgets

The reason why Sony is doubling down on Spider-Man, God of War and Horizon it seems. And why they want Naughty Dog back on AAAA single player games.
The competition
Wii Sports  Wii  82.90 million
Mario Kart 8  Wii U/Switch  65.47 million
Pokιmon Red/Green/Blue/Yellow  GB/GBA/VC  59.52 million
Super Mario Bros.  NES/GBC/GBA/3DS(VC)  48.24 million
Animal Crossing: New Horizons  Switch  43.38 million
Pokιmon Gold/Silver/Crystal  GBC/DS  42.21 million
Pokιmon Diamond/Pearl/Platinum  DS/Switch  40.34 million
Pokιmon Ruby/Sapphire/Emerald  GBA/3DS  37.88 million
Mario Kart Wii  Wii  37.38 million
Tetris  NES/GB  35.84 million
Wii Sports Resort  Wii  33.14 million
The Legend of Zelda: Breath of the Wild  Switch/Wii U  32.85 million
Super Smash Bros. Ultimate  Switch  32.44 million
New Super Mario Bros.  DS  30.80 million
New Super Mario Bros. Wii  Wii  30.32 million
Duck Hunt  NES  28.31 million
Wii Play  Wii  28.02 million
Super Mario Odyssey  Switch  26.95 million
Super Mario World  SNES/GBA  26.30 million
Pokιmon Sword and Shield  Switch  26.02 million
New Super Mario Bros. U  Wii U/Switch  25.59 million
Pokιmon Sun & Moon  3DS  25.09 million
Nintendogs  DS  23.96 million
Super Mario Bros. 3  NES/GBA  23.71 million
Mario Kart DS  DS  23.60 million
Super Mario 64  N64/DS  22.97 million
Wii Fit  Wii  22.67 million
Pokιmon Scarlet and Violet  Switch  22.10 million
Wii Fit Plus  Wii  21.13 million
Super Mario Party  Switch  19.66 million
The Legend of Zelda: Tears of the Kingdom  Switch  19.50 million