Where CryptoKitties came from
Axiom Zen, a Canadian innovation studio that helps build start-ups, created CryptoKitties in September 2017. CryptoKitties was released to the public on Nov. 28, 2017, and it was the first game built on the Ethereum blockchain.
The game was practically an immediate success. Within a week, it had more than 60,000 users and had processed more than $5 million in transactions. At one point, CryptoKitties was responsible for roughly 25% of the traffic on Ethereum.
Axiom Zen spun off CryptoKitties into its own company, Dapper Labs, in March 2018. Since then, Dapper Labs has been in charge of managing the game.
While CryptoKitties started on Ethereum, the developers later decided to build a custom blockchain for it, in part because of the network's congestion. They created the Flow blockchain in 2019 and transitioned CryptoKitties to it in 2020.