Hasbro Nerf Vortex Mega Howler: Yellow with Silver & Blue Get ready to play football &#8211; NERF style! The VORTEX MEGA HOWLER football gives you the ultimate football experience with awesome performance and a cool whistling sound like no other football! Go long and see how far you can throw it! Football howls with whistling action as it spirals through the air! It&#8217;s touchdown time!