Youll be able to play alone or in multiplayer mode.
Its very easy to play. Youll see a lot of fishes around you, depending on their size youll have to decide if you have to eat them or go out. Of course you start being a little fish, but when you start eating other fishes, hambueguers, waterplants,etc youll grow, so youll be able to eat more fishes. But be careful there are other aliments in the sea which are not really good for you.
And if you dont have enough, here it goes an extra feature: You can send your punctuation to the official website and try to be first in the ranking.