It looks like a pet breeding game. You "own" cartoon cats - visual representations of distinctive bundles of characteristics contained in a NFT. You generate more NFTs by "breeding" two existing cats (executing the smart contract), which results in random combinations of their characteristics in offspring.

What to do with them? Speculate on their value, same as any NFT.

As a "game" this sounds incredibly unsophisticated compared to normal video games - something that might have passed during the flash era of gaming, or maybe today on itch.io as a weekend project. The only "hook" outside of this is the speculation / potential to earn (and I imagine if you're in on the scam, earning is a lot of fun).

https://play.google.com/store/apps/details?id=com.pikpok.wtd...

https://apps.apple.com/us/app/clusterduck/id1531250914

You basically don't do anything except watch what weird mutations come out from the breeding. In Clusterduck, you can only have up to 30 ducks, so once you hit the limit, you have to throw a duck into the pit to sacrifice it. Sometimes when sacrificing a duck, a large monster spawns from the pit, and if you tap it enough times, it'll spawn a duck with a "cursed" trait of some sort.

I called it more of a sandbox than a game, but there are also Fancy Chases, events where a specific limited-time breeding goal is introduced and it's a race to be among the first to achieve this goal and breed a Fancy Kitty.

Not saying it's for everyone, but it's definitely something that thousands of people found and find pretty darn fun (again: if expensive).