Mario Kart 8 Deluxe 68.20 million pcs.
Animal Crossing: New Horizons 47.82 million pcs.
Super Smash Bros. Ultimate 36.24 million pcs.
The Legend of Zelda: Breath of the Wild 32.81 million pcs.
Super Mario Odyssey 29.28 million pcs.
Pokémon Scarlet/Pokémon Violet 26.79 million pcs.
Pokémon Sword/Pokémon Shield 26.72 million pcs.
The Legend of Zelda: Tears of the Kingdom 21.73 million pcs.
Super Mario Party 21.16 million pcs.
New Super Mario Bros. U Deluxe 18.25 million pcs.
Yeah I think the PS2 is out of reach. Unless they slash Switch 1 prices and keep software support going I don’t think there’s going to be a long tail. Pretty much everyone that wants a switch has one at this point.