What is the best selling game?

Super Smash Bros. is a top selling title sales units. It's ultimate. Breath of the Wild is a film about the Legend of Zelda. There is a Sword/Pokémon Shield. There were 20. 35 million units. The game Super Mario Odyssey. There are 20. 23 million of them. There was a party for Super Mario. There were 13. 82 million people. "Let's Go, Pikachu!"/ "Let's Go, Eevee!" The sequel to Splatoon. It was 11. 90 million. There is a new game called Super Mario Bros. U.