CryptoKitties - Breed and collect adorable creatures using Ethereum
CryptoAlpaca - Adopt unique alpaca on blockchain and shear wools everyday
Crypto Corgis - Crypto corgis live (and die) on the blockchain
Cryptocats - Cute little 8-bit cats on the Ethereum Blockchain
CryptoKittydex - A tool to help CryptoKitty geneticists decode the genome
Mars Genesis - 10,000 unique parcels of Mars stored on the blockchain