When you earn NFT game cards from mining, they will need to be Claimed to send them to your wallet.
To manually claim mined NFTs game cards, go to this link on bloks.io and use the "claimnfts" action. For more information, read the article: How do I claim mined NFT game cards?
Note: A successful claim action does not mean that you will always get an NFT game card automatically in the future; it means you will be claiming any currently available NFT game cards that are available due to earning them through past mining.