Skyweaver is a trading card game that is going to be soon launched on Polygon. They have a waiting list as of now. And they are going to be soon adding more details on NFTs and the rewards in the game. It would be a free to play and play to earn type of the game. All the cards in games would be free while playing except custom NFTs which would be the mode for game dev to earn and keep the ecosystem working. It's a good start for them. If you are into the card games then check them out. Check out the project: https://www.skyweaver.net/