Grumpy Old Geeks Products CryptoKitties Product CryptoKitties 2 mentions in 1 episode An earlier blockchain collectible project the hosts recall while discussing NFTs. Mentions 497: Not F’n Tangible Mar 3, 2021 1:36 if you remember 2017, there's crypto kitties 5:58 they basically took down the entire system with CryptoKitties