I AM ONLY GOING TO TELL BIG BOSS ANSWERS.(HOPE NOBODY GETS MAD)
IN LEVEL ONE
THE FIRST BIG BOSS YOU HAVE TO BEAT IS BIG BOB-OMB. TO BEAT HIM, YOU HAVE TO GET BEHIND HIM AND PUSH 'B' TO PICK HIM UP. DON'T THROW HIM OVER THE EDGE. YOU WILL HAVE TO THROW HIM THREE TIMES ON THE GROUND.
LEVEL TWO
YOU DON'T REALLY HAVE A BIG BOSS. THE HARDEST STAGE IN THAT ONE IS THE ONE WHERE YOU HAVE TO FIND THE BODY OF THE SNOWMAN AND HAVE HIM ROLL DOWN AFTER YOU, AND YOU HAVE TO STAY IN FRONT OF HIM. GO IN THE SNOW LEVEL AND GET ON THE LEDGE WITH A BABY PINGUIN, IT IS EASIER TO GO UP FROM THE CHIMNY. ONCE UP GO DOWN TOWARD THE BIG BALL OF SNOW ON YOUR LEFT. TALK TO HIM AND THEN HE WILL ROLL OFF. YOU HAVE RUN DOWN TO HE SLIDE IN FRONT OF HIM AND SLIDE DOWN AND STAY AHEAD. WHEN YOU GET DOWN TO THE HEAD. YOU HAVE TO STAND RIGHT IN FRONT OF IT ON THE SIDE AND STAY THERE STILL! THE BALL WILL ROLL OVER YOU. ONCE THE SNOWMAN IS IN PLACE GO TALK TO HIM AND HE WILL GIVE YOU A STAR.
LEVEL THREE
THE BIG BOSS IN HERE IS A LARGE STONE THAT ANY TIME YOU STAND IN FRONT OF HIM HE WILL FALL FORWARD TO SMASH YOU JUMP OUT OF HIS WAY. BY THE WAY THIS BOSS IS ON THE TOP OF THE ISLAND. ONCE YOU ARE UP THERE, HE WILL TALK TO YOU AND THEN CHASES YOU. YOU HAVE TO MAKE HIM FALL DOWN. WHEN HE IS DOWN ON THE GROUND YOU CAN SEE A BANDAGE IN THE SHAPE OF A CROSS, YOU HAVE TO GRT ON TOP OF HIM AND JUMP AND WHILE YOU ARE STILL IN THE AIR YOU HAVE TO PUSH THE BUTTON 'Z' ON THE BOTTOM OF THE CONTROLLER. IT WILL CAUSE MARIO TO SMASH DOWN WITH HIM BUTT AND SMASH THE BAD GUY. YOU HAVE TO DO IT THREE TIMES IN A ROW, IF YOU FALL OFF YOU HAVE TO START ALL OVER, TALK TO HIM AND HAVE TO SMASH HIM AGAIN.
LEVEL FOUR
IN HERE THERE IS NO BOSS, THE HARDEST ONE THOUGH IS THE ONE WHERE YOU HAVE TO WALK THROUGH THE WATER AND GO THROUGH A JET STEAM TO GET A STAR. WHAT YOU HAVE TO DO IS GET THE METAL CAP. IF YOU DON'T HAVE IT YOU WILL HAVE TO WAIT UNTIL YOU GET THE KEY FROM BOWSER. FIRST YOU NEED 8 STARS, WHEN YOU DO, YOU HAVE TO GO TO THE BIG STAR DOOR, AND GO IN, INSIDE YOU WILL SEE A PICTURE OF TOADSTOOL, BUT AS YOU GET CLOSER IT CHANGES TO BOWSER. YOU WILL FALL THROUGH A TRAP DOOR INTO A LEVEL. YOU GO THROUGH THE STAGE AND THEN GET TO A PIPE. JUMP DOWN IT AND YOU WILL MEET BOWSER. YOU HAVE TO GET BEHIND HIM GRAB HIS TAIL AND SWING HIM AROUND UNTIL HE HIGH ENOUGH TO THROW. YOU HAVE TO THROW HIM DIRECTLY AT ONE OF THE BOMBS IN THE CORNER OF THE AREA. HE WILL GET BLOWN BACK AND WILL GIVE YOU A KEY. THE KEY UNLOCKS THE DOOR DOWNSTAIRS, GO IN AND DO THROUGH THE CORRIDOR INTO A PLACE WITH ALOT OF DOORS. FROM THE DOOR, YOU CAN GO EITHER RIGHT OR LEFT, GO RIGHT. FOLLOW TO A SPLIT WERE ONE GOES RIGHT AND THE OTHER GOES STRAIGHT. TURN RIGHT AND GO INTO THE WATER AND IT WILL SPLIT RIGHT AND LEFT. GO LEFT AND INTO THAT DOOR. YOU SHOULD BE IN A ROOM WITH A BLACK COLORFUL POOL IN IT, JUMP IN. INSIDE YOU WILL SEE A MAP FOLLOW THE MAP TO THE UNDERGROUND LAKE. YOU WILL REACH A PLACE THAT HAS A BIG HOLE IN THE MIDDLE. GO TO THE RIGHT ALONG THE WALL. YOU WILL REACH A PART THAT HAS NO MORE LAND. YOU WILL HAVE TO LONG JUMP TO THE LAND WHERE BOULDERS ARE COMING DOWN, RUN UP IT AND STAY TO THE LEFT TO GET COINS. AT THE TOP, YOU WILL COME TO A WALL, WALK ACROSS TO THE METAL DOOR. GO IN AND YOU COME TO A ROOM, WITH A WEIRD LOOKING BLACK AND YELLOW THING. STAND ON IT AND IT WILL GO DOWN. AT THE BOTTOM IS A SLIDE INTO THE WATER. IN THE WATER IS A SEA MONSTER. JUMP ON HIS BACK AND STOMP(JUMP AND 'Z'), HE WILL LOWER HIS HEAD YOU GET ON IT AND GUIDE IT OVER TO A ISLAND WITH DOUBLE DOORS. GET ON IT AND GO THROUGH THE DOORS. INSIDE IS ANOTHER BLACKISH WHOLE. JUMP THROUGH. YOU WILL THEN BECOME METALIC LOOKING AND WHEN YOU RUN IN WATER YOU CAN WALK ON THE BOTTOM. WHEN YOU REACH WATER GO LEFT AND GO UNTIL YOU REACH A LAND BRIDGE. CROSS IT AND GET TO THE GREEN HILL(SWITCH)JUMP ON IT AND THEN YOU HAVE THE METAL HAT. GET BACK TO THE LEVEL FOUR DOOR, GO IN AND GO OVER TO THE ISLAND WITH A GREEN BOX ON IT. HIT THE BOX AND GET THE HAT, IMMEDIATLY JUMP INTO THE WATER, IN THE DIRECTION OF THE STAR IN THE JET STREAM, YOU CAN NOW WALK THROUGH IT TO GET THE STAR.
The code for the super move for mario is: A,B,L,R
Star Ride
First you want to go into the door were the water level is and the two black boxes behind you are secret levels and you have to go right up to them and do a back flip right into it and then you will be challenged to get a star.
Penguin Ride
In course 10, snowman's land, another cool trick for Mario is his new way to cross the ice bridge. Use the cannon to launch up to the tree, then get to the face of the giant snowman. Before crossing the ice bridge by using the penguin's help (walking at his side), try jumping on his head instead.
What will happen is that Mario will end up sitting on the penguin's head,and will avoid the strong gust of wind that normally pushes him off.
Blockmen Secret
In course 2, Chip off Whomp's Block (found in door 1 on the right side of the castle), there is a cool trick Mario can pull off, but only if your good.
Take Mario up to the mid-section of the castle, where you can find two giant guard blocks.
The trick is cool because it looks like a developing mistake, but we have been assured by Nintendo that it isn't. See those bandaids on the block's back? There's a reason for that. The normal way to beat these angry blocks is to stand in front of one, wait until he's about to collapse on Mario, then quickly avoid him, and perform a butt-stomp on his back. By doing this, gamers will get three coins (also by just jumping on these guys' backs, Mario gets one coin per jump).
But instead of avoiding the block, aim directly into the center of the block's face and jump into it (it has to be exact). What will is that Mario will jump straight through the block's face, and appear unharmed on the other side. This makes collecting coins from these blockheads a little easier (once you get the hang of it).
Hat Trick
This is probably one of the coolest( if not entirely innocuous) Mario tricks we've found so far. Go to Snowman's Land(course 10), which is located on the second story, up one story, and in the side door with the red carpet in front of it.
Once you're there, get to the snowman's head, as if you were about to cross the ice bridge with the penguin's help. Now, go ahead and let the snowman's breath blow you off the bridge. Your hat will fall off. Don't go pick it up -- leave it there!
Lead your hatless Mario past the gray star spot, the small, pop-up snowman, and toward two pine trees. The second tree of the two is in the corner, and it's a teleport. Teleport through it. Now step back and teleport yet again, in fact, do it at least three times.
Once you've teleported a few times, go back to your hat and look at it carefully. Examine it from all sides. What you'll see is a bunch of hats stacked up on each other. Slowly approach the hats. Pick the one hat and Mario will put it on his head and the other hats will stay there on the ground! Now, pick up the other hat(s), and Mario will put the hat on his hand and carry it around with him! He can whack baddies with it, and he won't put it back until you either teleport with him, get a star, or leave the level.
Like we said, it's innocuous, but fun, and it works on both Japanese and U.S. versions. One warning: When Mario has his hat in his hand, he will take double damage.
Staircase Weirdness
Just plain weird!
This one is surely a glitch. Take Mario to the second story(up from the foyer in the main part of the castle). Enter the door with the big pudgy star on it. Take about three or four steps, and face the wall on the left. Face the wall and jump two times. The second times Mario will slip through the underside of the staircase and appear on the stairs above.
Big Penguin Race
One of the cool things to do after achieving 120 stars in Super Mario 64 is to go back and look at certian differences in the game. There aren't many, but we have found a couple.
Go back to Course 4:Cool, Cool Mountian, and before entering, move the selection cursor over the stars until you reach Big Penguin Race. Enter into the game, jump into the chimney in the house at the levels beginning, and you'll meet up with the fattest penguin known to man (uh, Mario, that is).
It looks like the designers simply took a 3D tool and streched the penguin out as far as they could, though it probably took more work than that.
This trick is good for a laugh, and the race is a little more difficult as well because when the Penguin gets in front of Mario, you're more vulnerable to fall off than before.
Mario the Airhead
There are various courses throughout Super Mario 64 in which polygon gliching occurs. Of them, this one struck us as the best of the bunch, because we were able to find out Mario's "IQ."
Find any door in the castle and open it. Immediatly turn around and try and go through, and then stop asap. Occasionally, the Latiku Bros. cameraman won't come through with you, or it will come only partially through. If you do the trick right, and it will take a few tries, you'll get an "x-ray" of Mario's skull.
Finally, we were able to see into the mind of the greatest plumber of all time, which is to say we found very little at all. Mario has finally been seen for what he truely is, an airhead who's just hot for the princess. (just a joke.)
Rabbit Test
Go to the Basement. Find a door which you can easily go in and out of. After going through the door, quickly execute a jump kick back at the door. Usually you'll go through the door completely without opening it. However, if you time it just right, you can "merge" Mario with the door, i.e. half of Mario will be on one side and the other half will be on the other side. (This takes a little practice.)
There is a situation in which you can actually do something weird with this trick. If you manage to find the rabbit in the basement and catch him, don't collect his star. Instead, carry him to a door and set him down just in front of it. Now go through the door and try the jump kick trick until you get Mario "merged" with the door (don't be suprised if it takes a while to get the timing right). Now pick the rabbit back up and set him down on the other side of the door. Go through the door and now you can carry the rabbit through the front room in the basement. This trick may be just "for kicks", but it is kind of fun to do.
Secret Room
After attaing all 120 stars, here's a cool glitchy thing to do just for kicks. Drop into the cannon and blast onto the roof where Yoshi is. Grab the winged hat (from the red switch box) and rush back into the cannon on the ground. Aim toward the middle tower and then aim the cannon really high at the top of cloud above it, and blast toward it. Land on it and walk around to the left side, and Mario should fall through the wall behind the front door.
Excpt for one thing, it's black and weird, and seems he can't get out. Go through the door first. He will appear as if he's in the front lobby. Now, if Mario is facing the door, scoot him over to his right, and he should be able to walk right through the wall beside the door. Ah, glitchy madness!
Meet Yoshi
After masterfully attaining all 120 stars, there is one cool thing you can do, and that's meet that fruity green creature, Yoshi. Ah, the moment you've been waiting for (and of course, we know many people have already gotten this.)
Go outside the castle, and climb inside the cannon on the beach. Aim yourself onto the roof, and when you land, you'll meet yoshi, who seems to have been waiting for Mario! He speaks with you briefly and then fills your life meter up to 100 and then leaves rather quickly.
Mario-beque
Did Nintendo acually mean for gamers to have Mario walking around up here? If so, it sure seems strange that Mario can walk stright through this pole.
Find this glitch at the end of the game when Mario has earned all 120 stars. Use the cannon to get him here by shooting him nearly straight up in the air after grabbing the flying hat on the rooftop near yoshi. Can you perform a perfect swan dive from the roof into the pool at the front of the castle?
On top of the world!
For those of you that have collected all 120 stars in the game, while on the roof of the castle, you may have noticed that real-to-life properties don't always apply up here because of programming errors and such. Even if you haven't collected 120 stars you have surely noticed that there is a tip top to the castle. Well, there is a way to get up there, and here's how. You shoot yourself on top of the castle and get the red cap. From there you run up to the very front and center of the castle, jump three times and get on the second level of roofing(just like you would when you are tring to get the clipping error where you fall through the wall). Okay, on this level there are 8 sides to it. The one facing the front of the castle is the one where you fall through. You don't want to be there, but you want to be on the side facing the waterfall. On this side you can on this side you can just get a running start, and run up the side of the wall all the way up to the top of the castle!! From here, you are on top of the world!
Weird place to hide a 1-up in SM64
This title is pretty self-explanitory, it's just a weird place to hide a 1-up, but cool! Just go to course 2 and pick star number 3 at the star selection screen. This will make the tower at the tower at the top of the course be there. Okay, go to the top of the course and down at the base of the tower there is a one-up that is hidden in the wall. Sorry I forgot which side was on but here is how you get it. Punch all of the sides of the tower base and when you hit the right one the wall will explode and a little one-up will be located inside. Pretty neat!
Hat thief!
Go to stage 10, the one with the big snowman that blows your hat off(the same stage where you do the hat trick). Go up and get your hat blown off...then get a star and finish the level without your hat! Now normally you would go back to the same stage to get your hat back...instead, go and get another star from another stage and save afterwards. Now go back to stage 10, the hat is gone...not totallt though. When you first start the level, walk towards the big snowman (past the cannon) and one of those little snowmen will pop up to throw snowballs at you...and guess what...he's wearing your hat! The only way to get your hat back is by killing the snowman. To do that, just run around him a bunch, just like you would with an eyeball.
Chunky Penguin
After you get all 120 stars and talk to yoshi, go to Course 4: The Big Penguin Race. Once you go in the penguin slide building, you'll notice that the penguin has gained some weight! When you try to race him, he's cheesier than ever. That extra weight makes him go faster, and he's do fat, he takes up most of the track!
Secret Passage into castle
After you get 120 stars, go find yoshi and talk to him. Then grab the winged cap out of the red box and go back to that cannon. Pull all the way back so you can launch as high as possible, and then fly onto the brick ledge just before the highest grating on the castle. Now, standing on the ledge facing the grating, run forward towards the grating. If it doesn't work the first time just run at it again. Sometimes you will run up the wall, this means you have to do it again. Eventually you will just run through the wall and fall into the castle without going through the main door. Now you appear to be stuck in a dark black room with the main doorway leading back out into the courtyard. Run through the door and the whole outside turns into a black box but the inside is now visible. This is most likely a glitch, but it's still pretty neat.
Secret of the clock!
Before you enter course 14, you will notice that the hands of the clock move. If you jump in at 12:00, the clock stops. If you jump in at 6:00, the clock gets messed up. Try it and you see that it varies fast and slow and moving platforms by the red coins keep changing direction. If you jump in at 9:00, the background moves fast. Therefore, if you need the background moving to get a certian star, and you want it safe, then enter at around 3:00.