Nintendo is beloved for its iconic gaming characters, and the games they star in are blockbuster hits.

The "Super Mario Bros." and "Legend of Zelda" gaming franchises are two of Nintendo's best sellers.

But a third, unexpected franchise is actually Nintendo's most important: "Mario Kart."

Like Mickey Mouse is to Disney, such is Super Mario to Nintendo.

The iconic little plumber is known the world over, and he's directly tied to the Japanese gaming giant that created him. That's because his games are outrageously popular, including 2017's excellent "Super Mario Odyssey."

Given that, you might think that main entry "Super Mario" games are Nintendo's biggest sellers. And you'd be really close!