Cryptokitties is a popular Ethereum-based blockchain game that allows players to buy, sell, and breed virtual “cats,” and each cat on the platform is unique, and its ownership is secured using blockchain technology, which means it cannot be replicated, stolen, or deleted. As a NFT, each digital cat can have its value increase or decrease as per the market. Many times, cats valued over $100,000 have been sold on the platform. Launched in 2017, the game has set records in popularity and is held responsible for clogging up the Ethereum network as well, with estimates suggesting that at one point, nearly 10% of the total traffic on the system was due to the game. Cryptokitties has not only raised millions of dollars in funding over the years but is also credited with the birth of several popular NFT and digital collectibles trading platforms.