What is CryptoKitties ?
Cryptokitties is a blockchain game on Ethereum developed by Axiom Zen that allows players to purchase, collect, breed and sell virtual cats. It is one of the earliest attempts to deploy blockchain technology for recreation and leisure. The game's popularity in December 2017 congested the Ethereum network, causing it to reach an all-time high in number of transactions and slowing it down significantly.
How does it work ?
A CryptoKitty's ownership is tracked via a smart contract on the Ethereum blockchain. Each CryptoKitty is represented as a non-fungible token using the ERC-721 token standard on Ethereum. Generation 0 CryptoKitties were sold to players in an auction at the rate of one every 15 minutes (672 per week) for one year. New CryptoKitties are created by breeding existing CryptoKitties.
Based on the limited number of cats going into circulation and their limited genomes, there is a limit of around 4 billion total cats that can be bred. Each cat has a distinct visual appearance ("phenotype") determined by its immutable genes ("genotype") stored in the smart contract. Because cats are tokens on a blockchain, they can be bought, sold, or transferred digitally, with strong guarantees of ownership. A CryptoKitty does not have a permanently assigned gender. While they can only engage in one breeding session at one time, each cat is able to act as either matron or sire. There is a 'cooldown' time that indicates how soon the cat can breed again, which goes up with the number of breeds, capped at one week.
A group known as Axiom Zen innovation studio developed the game. Until November 2018, Axiom Zen intends to continually release a new CryptoKitty every 15 minutes, with the rest of supply determined by breeding of CryptoKitties. CryptoKitty owners may put them up for sale via an auction for a price set in Ether (ETH). They could also put them up for sire, where another player can pay to breed with a specific CryptoKitty.
Why you should play at this game !
This is one of the most famous games based on the Ethereum blockchain but also one of the most entertaining. Even though it's quite a pay to play game, having your own kitties, trying to achieve the ultimate/rare kitties is such a good challenge. You can buy/sell kitties for ETH and only a small quantity of players can actually earn more than decent earnings with this game.
My kitties are always available for breeding, do not hesitate to use them