Cryptospells, a japanese card based games that is available on the Polygon blockchain. It's free to start and also it has pretty good market from japan among which you can sell the in game NFTs. It also has decent lore and the card game fanbase. I have checked both the website and app, and noticed that they are a bit low on the translation part, which can be painful for non-japanese gamers but I am sure they will eventually catch up on that part. Check out the project: https://en.cryptospells.jp/