CryptoKitties - Breed and collect adorable creatures using Ethereum
CoinList - Build a diverse portfolio of pre-launch token investments
Mars Genesis - 10,000 unique parcels of Mars stored on the blockchain
Crypto Buyer's Guide - Extensive cryptocurrency buying guide
Crypto Corgis - Crypto corgis live (and die) on the blockchain
CoinCap.io - Shows the prices of different cryptocurrencies from ShapeShift.