Blockchain technology is the basis for crypto currencies. Although most will only be interested in the price of bitcoin or ether, the underlying usage of the technology is overlooked.

CryptoKitties is a game centered around breedable, collectible, and oh-so-adorable creatures we call CryptoKitties! Each cat is one-of-a-kind and 100% owned by you; it cannot be replicated, taken away, or destroyed.

CryptoKitties is one of the world’s first games to be built on blockchain technology—the same breakthrough that makes things like Bitcoin and Ethereum possible. Bitcoin and ether are cryptocurrencies but CryptoKitties are cryptocollectibles. You can buy, sell, or trade your CryptoKitty like it was a traditional collectible, secure in the knowledge that blockchain will track ownership securely.

People are spending a crazy amount of real money on the game. So far about $1.3M has been transacted, with multiple kittens selling for ~50 ETH (around $23,000) and the “genesis” kitten being sold for a record ~246 ETH (around $113,000). Currently, it will cost you about .03 ETH, or $12 to buy the least expensive kitten in the game.

The game is run via a set of 5 Ethereum smart contracts written by AxiomZen, and users interact with it via their own Ethereum address. Right now the easiest way to do that is by using the Chrome extension MetaMask which gives you the ability to send and receive Ethereum directly in your browser. You then would navigate to the CryptoKitties site which is essentially an interface to interact with their smart contracts so you can buy sell and breed kittens.

it is said that this game has slowed down the network. So, will ethereum be able to handle more ‘games’ in the future remains to be seen. So, what sort of applications do you think is suitable to run on ethereum using smart contracts ?