Is it possible to make my own NFT game? make much money? in success always depends on yourself

Have you ever heard of NFT games? They have gained a lot of popularity in this short time, and it is not for less, many people won and still earn a lot of money, so I have wondered how much will those who create their own NFT games earn? It has generated that doubt in addition to is it possible to do it? How can I create my NFT game? I will be delighted with the person who knows the answers on these questions