Mario invincibility
                       Get to Bowser as anything but small Mario. Stay put, and let Bowser stomp you. Now, as long as you stay on the
                       ground, Bowser can't hurt you, but the next time you jump, you're fair game.
 
 
                       Unfiery Bowser
                       Use a P-Wing and fly to Bowser using the lower route after all those Donut Lifts. When you're in Bowser's room,
                       immediately fly up and over the wall on your left. As soon as you get over, drop all the way down, then fly all the way
                       back to the room you started in. When Bowser appears, nothing will happen when he tries to breathe fire.

 
                                   Strange death #2
                       In world 4-3, make your way over to the second instance of those wooden blocks. There should be three brick blocks
                       above you, one containg a 1-Up. Walk over a little more and you'll see a Spiny walking upside-down on some bricks,
                       and a Buzzy Beetle walking on top of the same bricks. When you see this, don't get too close to the Spiny, or it'll
                       drop down. Instead, walk slowly over and stand under the first block of that platform. When the Buzzy Beetle is above
                       you, jump so you kill him as you hit the block. The Spiny will also die, and you didn't even touch it! (I'm not sure yet if
                       this only works when Mario is small.)
                       --

               
                       Bowser's "secret" room
                       In World 8-Castle of Koopa, go in the highest door at the end of the Donut Lift part. You should be in a room with
                       donut lifts, Bowser statues, and at the end Bowser starts shooting fireballs at you even though he's in the next room.
                       Anyway, squat and fly (easiest with a P-Wing) and land on top of the last Bowser statue's head. Stand up and Mario
                       will "moonwalk" through the wall to another room! It's not really a new room, per se. It's just a duplicate of the room
                       you'll enter if you don't take the highest route during the donut lift part of the Castle.

 
                       Gray Mario
                       As Tanooki Mario, press B as you go down a pipe. If your timing is perfect, Mario will turn gray, but not into a statue.

                       Gray Hammer Mario
                       Enter World 7-8 with a Tanooki Suit. Go down the pipe that leads to the secret room that contains a Hammer Brother
                       Suit. Hit the Giant ? Block to sprout the Hammer Brother Suit. Stand in a place where you think it will bounce on
                       you, and press Down and B to turn into a statue. If you get the Hammer Brother Suit while you're in statue form, you
                       will be Hammer Brother Mario, but gray! The bad thing about this cool bug is that you can't go up the pipe at the end;
                       you're stuck in the secret room.

            
                                   Suicide
                       In World 5-Fortress, jump up to wedge yourself between the exit (3rd) pipe and the left wall. Jump a few more times
                       and you will get smashed and lose a life.

                                Change the color of stuff
                       This bug is really hard to explain.... Just uhhh mess around with kicking a shell into an object just as you scroll that
                       object off the screen. Scroll back and sometimes it has changed color! Usually the object turns green or something.

 
                        Find hidden Blocks
                       In stages with the starry background, you can tell where the hidden Blocks are because the stars are a different
                       color.

 
                              Warp to BOOM-BOOM
                       In World 3-Fortress, go in the third door and press Up again fast, and you'll go straight to BOOM-BOOM.

 
                                        Invisible Mario
                       In World 3-9, squat on the white block for 5 seconds. When you drop down behind the background, go down the pipe
                       at the end of the dry land. You won't be able to see Mario in the water.

 
                         Wall jump
                       If you jump at a wall just right, you'll "catch" the wall with your foot, and you'll be able to jump off the wall! This has
                       many practical uses, such as in the beginning of World 6-9. Have small Mario jump off the ice blocks into the wall of
                       ice. When Mario touches the wall, jump again and he should make it over the top. Go right and you'll find the end of
                       the stage!
                       Note: This glitch requires a perfect jump, and perfect timing.

                       A strange death
                       In World 3-9 at the part with the Para-Goomba, have small Mario hit the sixth Block on the left to sprout a Super
                       Mushroom. Let it go past that Block, then bump the Mushroom from underneath again and the Para-Goomba will die.