Feature World 7: Caverns of Darkness After beating the tower leads downward to the Caverns, Mario starts World 7-6 with Random Hammer Bros and Nipper Plants. World 7-7 up next with a clear auto-scroller with Goombas and Bomb-ombs trapped on the 2nd floor A Fortress come up. The level covered with darkness except a circle around the player. There was a Thwomp that you almost can't do anything about (aka FireFlower!) World 7-8 was an underwater ice cavern, which is easier with frog suit. A ghost house was being introduced(Just the name as, it was full of ghosts) World 7-9, you need to use starman to passed the Munchers, don't let those stars jump away!