Card game NFT was successful back then, but i don't think if the project hasn't started yet it will be successful in the future because people are more creative creating NFT games, there are much more fun genre to explore such as creating virtual world like minecraft and RPG games with a quite good graphics. So i think card games is just the beginning of NFT games but people are more likely to play another challenging and fun games in the future.
But does not rule out the possibility some people are fans of card games.