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Maniac Mansion Cheats and Codes

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  Maniac Mansion NES/SNES/N64 Final Security Door Code The code to get past the prison?s final security gate that leads to the lab is all zeros. Note: Now you can skip to the end of the game!
  Maniac Mansion NES/SNES/N64 Getting The Old Rusty Key Get the casette tape and record, use the record on the vitrola and casette tape in casette recorder, now turn both on, go with the casette tape to the living room and use the casette player with the casette tape, then the chandeliers will fall to the ground and you can reach the old rusty key
  Maniac Mansion NES/SNES/N64 Exploding Hamster And The Afterlife To do this, you need either Razor or Syd. When you have Ed out of the room, get his hamster. The card key and the dimes are also things you can get if you do it in time. When you are one of the characters, place the hamster in the microwave and turn it on. The hamster will explode. For an extra thrill give the hamster back to Weird Ed. He will get mad and kill you. You won't see the killing, but you'll end up in afterlife with nothing, but you can still get stuff from places, like the sponge. You can still get caught by Edna or Ed if you are in there room. Also your friends can't see you and you are invisible. Enjoy you death!
  Maniac Mansion NES/SNES/N64 Blind Maniacs Go into a room where someone who lives in the house is. As soon as they see you switch to another person for a minute or so. Switch back to the person who's about to get caught and they won't see you. This trick works great in the nurses room .
  Maniac Mansion NES/SNES/N64 Freeing Prisoners When one of your guys gets captured, all you have to do to free him is... get another one of your guys captured! Once two are captured, go to the middle of the wall in the basement, have a guy stand at the door to your right, and push the stone in and the door will open. You're free to go!
  Maniac Mansion NES/SNES/N64 Getting Past The Green Tenticle This is very simple. All you have to do to get past the green tenticle is give him the wax fruit witch can be found in the left-hand door on the second floor and the Pepsi that can be found in the refrigerator. NOTE: DO NOT USE BERNARD WHEN DOING THIS HE WILL CHICKEN OUT!
  Maniac Mansion NES/SNES/N64 Key To The Dungeon The key to the dungeon is cleverly hidden within the chandelier in the living room, the room you enter on your way to the library. To break the chandelier, you will need: A cassette tape. The cassette tape is found in the library beneath a secret panel by the telephone. A record. The record is found in the Green Tentacle room ?- the room with the huge speakers. Take these two items to the second floor, to the room with a piano and TV. Once there, put the record on the victrola and the cassette into the tape recorder. Turn on the recorder, and then the victrola. Wait until the vase on the piano breaks before turning off the tape recorder. Once the tape is made take it down to the living room and put it in tape deck of the old-fashioned radio. Play the tape. The high frequency will shatter the windows and then the chandelier. And the key will fall onto the floor!
  Maniac Mansion Any A Cool Ending When you enter the meteor's room, grab it and go out the door. You will end up in the garage. Hurry and run out the gate and goto the room with the man-eating plant. Hurry and feed the meteor to the plant.
  Maniac Mansion Any Maniac Mansion Doesn't matter which person you use for this one, go to the sleg o' mattic, and lift weights to get stronger. Go down stairs, have one kid push on the Gargoyle to the right by the front door, and have the other kid go into the door that opens. Turn on the light switch, go all the way into the room and get the silver key. Go way back to the first door by the front door, go through the dining room, to the supply room. Use silver key to open yellow door. Open the wooden gate door, go to garage, open the garage. Get the water faucet, and open the trunk of the car. If you were to pull the bushes to the left in the front of the house already, the tools in the trunk are what you use to open the grate!!
  Maniac Mansion NES/SNES/N64 Hint: Skip the arcade part You do not have to do anything with the arcades. If you do not fix them, the combination will always be 0000.
  Maniac Mansion NES/SNES/N64 Hint: Own two hamsters Have Sid or Razor put the hamster in the microwave. Turn it on and while it is on, execute the "Get Hamster" command. You will have the hamster, and when you open the microwave the blown up hamster will be there.
  Maniac Mansion NES/SNES/N64 Hint: Get past Nurse Edna If you are quick, you can go in Edna's room, and select the top of the ladder. You will go past her and outrun her into the attic room.
  Maniac Mansion NES/SNES/N64 Hint: Get Nurse Edna out of the kitchen quicker At the beginning of the game when Edna is in the kitchen, carefully walk until she sees you, then run out of the kitchen. However, you must be quick about it. You can then re-enter the kitchen and she will not be there.
  Maniac Mansion NES/SNES/N64 Hint: Run up Nurse Edna's water bill Turn the faucets in the kitchen and bathroom on and waste water.
  Maniac Mansion NES/SNES/N64 Hint: Get Weird Ed to like you Get his package when it arrives before he does. Then, take it up to his room and give it to him. You can then enter his room as you please, and he will not throw you in the dungeon. However, do not take anything while he is in there or he will not like you anymore. You can also take his hamster when he is not in the room and give it back to him. Note: Edna will never like you.
  Maniac Mansion NES/SNES/N64 Hint: Feed Meteor to Plant Execute the "Use Yellow Key" command in the car before you get the Meteor. Then, get the Meteor and run all the way to the room with the Plant. Feed it to him. The fence will be blown up.
  Maniac Mansion NES/SNES/N64 Hint: Messing with the publishers Send them the original manuscript, the black tape, the tape with the record recorded on it, the tape with the broken record recorded on it, the record, the broken record, an empty envelope, or the envelope with the quarter still in it and see what they say.
  Maniac Mansion NES/SNES/N64 Hint: Do not lose any items when getting past Green Tentacle Early in the game, when you first go to the third floor, Green Tentacle will be there saying that you cannot pass unless you give him food. Give him the can of Pepsi. He will say, "Twelve full ounces, that's a lot. Thanks kid." Leave the room. Return, and he will be gone. You will still have the can of Pepsi.
  Maniac Mansion NES/SNES/N64 Hint: Get past Purple Tentacle Give the Purple Tentacle the Meteor Police Badge after you call him and he arrives. He will drop his badge.
  Maniac Mansion NES/SNES/N64 Hint: Opening the garage door and grating: To open the garage door and the grating in the front of the house, use the Hunk-O-Matic machine by the bathroom twice.
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