Crypto kitties, I guess?
It's the first NFT game that we all knew and I think most of the idea about breeding and having a virtual pet started there that's connected to blockchain.
It's still there and I think there are still a lot of players that are playing the game. A very simple and basic game of collecting, buying and selling of pets.
I don't really consider collecting a game, but I guess it can be seen as one. But I want to like have fun, not spend tens of thousands to show off some ''nonfungible'' tokens.