Well, I've had a MyStable game before, forgot the password and then recently made a new one. In MyStable, just like Howrse for example, it's almost a necessity for success that you give the site money for various things. (Though Howrse is better in the sense that you can do well without donating a dime) There are credits on MyStable which you have to buy or register on various other sites. Not my favorite game. More casual players like me wouldn't enjoy this as much I think.