Super Mario Bros.: World 8-4

In Area 1, you'll see pipes and Goombas. After using a platform over lava, go down the pipe on the next landing. In Area 2, you'll see Buzzy Beetles and Paratroopas. When you see a pipe floating, hit an invisible block to go down the pipe. In Area 3, fish will be popping up. Go down the pipe after crossing a pit of lava. In Area 4, you are underwater with Bloopers and fire bars. Take a tough path and go through the pipe ahead. In Area 5, you'll see a Hammer Bro and a fireball lurk from the lava. Once you reach the drawbridge, Bowser will throw hammers and shoot fire. Touch the axe and you'll save the princess to end your quest.