What is a sack boy? I have heard a lot about it that it is really cool but what is it? Is it some kind of an adventure online game? What are its features? How can I get it? How much will it cost me? How do I play it? But I want to be sure that it is meant for the big boys because I don’t want to end up buying a game that is meant for the kids. So, please tell me about this as well.