There’s quite a lot to gain for developers who decide to make mobile NFT games. For starters, it’s another revenue opportunity. But there’s more. NFTs are hosted on blockchain, which is a more secure way to make transactions.
Furthermore, gamers are among the most passionate people in the world, and they love game items, characters, skins, etc. Owning NFTs of said items is, for many of them, like buying a unique custom-made merch. So gamers would flock towards games with NFTs.
Finally, for game developers who are equally passionate about their job, these new Google Play policies are a challenge to master something new, to try new approaches to game design, to make better, more engaging games.