As one of the biggest crypto crazes in 2020 and 2021, they had more than $95 million in sales in 2020 and almost $2.5 billion in just the first half of 2021.
NFTs are non-fungible tokens. The word fungible refers to something that can be interchanged for something else. NFTs are digital so they can't be duplicated. They're similar to art, music, video games, virtual land, etc.