Mega Nerf guns differ from regular Nerf guns in several ways. First, they use Mega darts which are twice as large and heavy as regular darts, making them shoot farther and harder. Additionally, they come in larger, more daunting styles such as a bow, semi-automatic, and shot gun. Hence, Mega Nerf guns are sure to intimidate the competition in a Nerf war but may not be suitable for younger kids.