I read this article just yesterday about why NFT + games does not really make sense: https://docseuss.medium.com/look-what-you-made-me-do-a-lot-o...
What I suspect people want is free co-marketing rather than composability. HyperDragons is famous because it did something interesting with CrytoKitties that were already famous. In that case you also need to be very careful using other peoples IP so probably want a license anyway.