Cryptokitties and Axie infinite?
It's Axie Infinity and many are getting into that game because you're going to play easy, compete and I think with their most recent update. They're almost making it an esports where people are going to compete but you've got nothing to lose because you can still earn from there.
Each win will give you a small amount of reward and then if the higher the rank you're going, you'll be rewarded with higher rewards.
4. Decentraland
I've seen this somewhere and I know that it's already been there quite long and this caught my interest.