I wrote a lot about NTF tokens in these topics

Everything you need to know about NFTs tokens
https://bitcointalk.org/index.php?topic=5274952.0

DeFi & NFT tokens project
https://bitcointalk.org/index.php?topic=5278144.20

This is a very promising area, especially for games. Perhaps the problem is that cryptocurrency is not so widespread, and it is easier for game owners to use standard platforms, such as steam, to sell games and content.