Smart Chain Tracker - Smart Chain Tracker is a free tool that allows you to see your live portfolio value as well as a chart of the historic value over the last week, month or year.
CryptoKitties - Breed and collect adorable creatures using Ethereum
CoinBundle - Invest in crypto portfolios with one click and zero fees
CryptoAlpaca - Adopt unique alpaca on blockchain and shear wools everyday
Bitcoin Flip - Trading Simulator for all the popular crypto currencies.
Mars Genesis - 10,000 unique parcels of Mars stored on the blockchain