Building a bridge between blockchain and consumers with cats(2017)

CryptoKitties, a blockchain game launched by its team in 2017, aims to make blockchain and distributed ledger technology accessible to consumers by using collectible cats. The team says users learn to transact with Ethereum through Metamask and experience smart contracts when breeding one cat with another. The article states that the game involves no ICO and requires no token purchase, and that users can buy, sell, and trade cats with only Ethereum. The alpha premiered at ETHWaterloo, where the team's Rufflet project won the hackathon.