The gameplay is fun, the concept is original, the story has depth, knowledge of how to read is required.
So, first of all, a kid has to know how to read in order to go through the story, learn the controls, PLAY THE GAME, etc. This game actually has a deep story, and the villain, Fawful, is pretty funny. Bowser is funny too. In fact, the whole thing is funny. Anyway, in this game, Bowser, after eating a "vacuum mushroom", inhales Mario, Luigi, Peach, a yellow ball named Starlow, and a bunch of Toads, and, for some reason, they shrink to tiny size. In this game, as Mario and Luigi, you have to explore Bowser's body, trying to find Peach. In this game, you can actually play as Bowser who is trying to stop Fawful from taking over his castle. The gameplay is very fun. This isn't just a Mario platformer. When you run into an enemy, you take turns battling enemies. You can choose an attack, then time it right to get the most damage. The battles are about timing. Special attacks are fun to try and pull off right. Mario and Luigi can explore Bowser's body and hit parts during fun little minigames, affecting Bowser's performance. Also, Bowser can do certain things that affect Mario and Luigi on the inside. The whole concept is very creative, and everything that happens is original. If you are looking for several great times, this game is the way to go.