CryptoKitties - Breed and collect adorable creatures using Ethereum
Crypto Corgis - Crypto corgis live (and die) on the blockchain
CryptoAlpaca - Adopt unique alpaca on blockchain and shear wools everyday
Sorare - Global Fantasy Football. Collect limited edition digital collectibles, Manage your team and earn prizes!
Mars Genesis - 10,000 unique parcels of Mars stored on the blockchain
MetaMask.io - A crypto wallet & gateway to blockchain apps