You meet old friends (Yoshi !!!), ajar of earlier games but redesigned worlds and many new features. The propeller suit opens up new possibilities and more possibilities than the old known spring. The penguin suit is leaning a bit to the Teddy suit, but new.
Beautiful is also that you can always cache and resume the game at a later time there. The advice that you get in the castle of the princess, are very helpful and show a some secret path.
The only drawback is that you can not take Yoshi in subsequent worlds, but gave him only in the games available, where it is also provided. That was better in "Super Mario World".
I can only recommend this game because it incredibly makes both alone, as well as several games fun and has a great entertainment value.