CryptoKitties is a game about raising little virtual cats, they grow, you can collect them and even mate to create new offspring. The novel thing is that this game based on cryptocurrencies will obviously allow us to earn money buying, selling and exchanging kittens.
A very important and outstanding feature is that the cats already owned, cannot be replicated, destroyed or taken away from you, in the same way each existing cat in the game is unique.
Luckily for me, it's a really fun and addictive game, and from alpha to beta to formal release, there have been a number of community-driven improvements. In addition to the self experience and the art they are absolutely amazing, not just because of the adorable kitties, but all the illustrations and design decisions on the website.
In short, to conclude, it is one of the first use cases that has been successful in showing blockchain technology for games. Loaded and inspiring for many, however, more work can be done on the game itself, it needs more playability and interactivity for users but it is still a success.