All of this is topped off with a battle against King Bob-omb at the top. The iron balls provide an excellent obstacle, letting you know the kind of dangers one can expect in the game. The open area gives players freedom to run around and get used to the controls. Like how World 1-1 is the perfect starter in Super Mario Bros., Bob-omb Battlefield is a world-class introduction. After entering the castle, the first world players drop into in Super Mario 64 is Bob-omb Battlefield.
