Etheremon is a decentralized application built on the Ethereum network. Etheremon creates a world of Monsters (or Mons) where you can capture, train, transform, and trade them with others. Compared to the other Games in this category, the Ethermon page in the State of The DApps seems to be very well organized and people gave great feedbacks. I can see that it has a licence and the team so called “Nakasatoshi” are constantly giving updates on the game.