You also gain ingame currency through the game. Called gtc I think these exchange at a rate of 0.2 gtc = 1 trx so you can make money back. You can withdraw these coins once you have 1000 so you would get 5000 tron back. Unlike kitties where the company made all the money trondogs alows users to buy in and own a shop and be part of the game in a way. I just see this game having far more potential.