According to the recent listings, CryptoKitties is no longer the leading DApp game on the Ethereum blockchain. Now it has moved two positions down, leaving its place to HyperDragons.
This is a strategy game app, based on Ethereum, too. It allows users to erect castles and whole kingdoms, fight for treasures and against dragons. The DApp has only shown a trading volume of just over 2 ETH over the last days but it has already got nearly 570 users on its ecosystem. The current overall balance of the game is almost 42 ETH.