At the start screen type in Up, Up, Down, Left, Right, A, A, C. You will gain fifteen extra lives.
Hear Thriller in the Zombie Stages
In any stage where there are Zombies (3-1, 3-2, 3-3, and 5-3), if you press and hold the B button then perform Michael's Dance Magic (press and hold A until he dances), instead of the usual tune that plays, a short version of Thriller will play. Note: this only works in REV 00 versions of the game!
Level Select
Hold Up + Left + A on Controller Two while you turn on the game. While holding these buttons, press Start on Controller Two. Now push Start on Controller One and select a one-player game. After pushing Start, you will see the words, "Round 1." Press Left or Right to select the levels and push Start.
Moonwalk
In order to moonwalk, all you need to do it to use Michael's kick attack while walking, and if you continue to go the same direction during and after the attack, instead of walking normally, Michael will moonwalk instead.
Play As A Robot
By rescuing the children in the correct order, you can become the mechanical robot. Here's how to rescue them.
In round 2-1, if you rescue the girl in the window located in the upper left first, a shooting star will appear. Jump to get the star and become the robot.
In Level 2-2, go to the top of the garage and rescue the only child up there.
In Level 2-3, get in the elevator and go up one floor. Now rescue the child on that floor to get the shooting star.
In round 3-2, rescue the first girl, located behind the rock.
In level 3-3 go to the left side of the waterfall. Look straight up and rescue the child above you.
Note: In all of these cases, the child-hostage noted must be the first one rescued when you reach that level.
Skip robot battle in round 5-3
It isn't necessary to turn into a robot in order to beat round 5-3. All you have to do is a dance attack affecting 8 or more enemies. After Mr.Big leaves the scene, and before that little freeze that happens before every boss fight, take a jump and before Michael lands press the magic button. Keep moving while spinning to where there are more green guards until MJ starts dancing. Getting 8 or more guys dancing will make you win the battle. If you want to, press one of the buttons during the explosion, to make the star fall and turn you into a robot for no reason. In this stage, hitting any button during the fight causes the star to appears, so the trick is doing so BEFORE the battle begins, the jumping thing is just to get you more time to gather enough enemies to make it work. If you fail, just hit a button and the star will fall anyway.
Extra Lives...