Walkthroughs & FAQs

Type Name File Size
General FAQs FAQ by CPepin 59K
General FAQs FAQ/Walkthrough by TSC 80K
General FAQs FAQ/Walkthrough by Geluf 47K
General FAQs FAQ/Walkthrough by ashlar79 15K
General FAQs Walkthrough by Capricorn 49K
General FAQs Walkthrough by Anonymous 8K
General FAQs Walkthrough by Aristotle 15K

Maniac Mansion Cheats For Commodore 64

  1. Alternate 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 go to the room with the man-eating plant. Hurry and feed the meteor to the plant. If done correctly you will have a cooler ending.

    Contributed by: BongoGoku 

Walkthroughs & FAQs

Type Name File Size
General FAQs FAQ by CPepin 59K
General FAQs FAQ/Walkthrough by Geluf 47K
General FAQs FAQ/Walkthrough by TSC 80K
General FAQs Walkthrough by Aristotle 15K
General FAQs Walkthrough by Capricorn 49K
General FAQs Walkthrough by Anonymous 8K

Walkthroughs & FAQs

Type Name File Size
General FAQs FAQ by CPepin 59K
General FAQs FAQ/Walkthrough by TSC 80K
General FAQs FAQ/Walkthrough by Geluf 47K
General FAQs Walkthrough by Capricorn 49K
General FAQs Walkthrough by Anonymous 8K
General FAQs Walkthrough by Aristotle 15K

Walkthroughs & FAQs

Type Name File Size
General FAQs FAQ by CPepin 59K
General FAQs FAQ/Walkthrough by TSC 80K
General FAQs FAQ/Walkthrough by Geluf 47K
General FAQs Walkthrough by Anonymous 8K
General FAQs Walkthrough by Aristotle 15K
General FAQs Walkthrough by Capricorn 49K

Maniac Mansion Cheats For NES

  1. Universal Inner Door Code

    At any time before Dr. Fred plays the fixed Meteor Mess game (meaning you have repaired the wires in the attic), you can enter 0000 as the inner door combination and the door will open. Presumably, the door combination is not stored in memory until the Dr. Fred Meteor Mess cut scene plays.

    (Note: the Dr. Fred attempting to play Meteor Mess cut scene will not set the inner door code)

    Contributed by: Rossmacdaddy 

  2. Freeze Nurse Edna or Purple Tentacle

    When you enter Nurse Edna's room, quickly switch to a different character before she gets you. Wait for at least 20 seconds and switch back to the character in Edna's room. She'll just sit there until the next time you enter her room. This can be repeated as often as you like.

    A similar technique is used to bypass the Purple Tentacle without the help of the Meteor Police, Weird Ed, Green Tentacle, or Recording Contract. Open both doors to the outer lab. If you're in the outer lab and then a cutscene (can be any one of them) occurs, the Purple Tentacle won't run after you and you get walk past him. To easily trigger a cutscene, either ring the doorbell (can only be done if Ed didn't get his package yet), switch to the kid outside the lab and run in there before Ed notices the doorbell's been rung. Or, if you have Jeff and/or Bernard have them fix the phone, call Edna, and before she answers it, switch to the kid outside the lab and go in quickly.

    Contributed by: Binta 

  3. Avoid Nurse Edna At The Beginning

    When you first go into the kitchen at the beginning, Nurse Edna is waiting there for you, and you have to outrun her or she'll get you. If you go the pause menu (where you can save, reset, etc.) and unpause, or switch to another kid and then back, she'll be gone.

    Contributed by: Larcen Tyler 

  4. Start the game with two kids instead of three

    Exploiting this glitch will allow you to start the game with Dave and one other kid, instead of Dave and two others. To do it you must click on the kid you want to accompany Dave, and as fast as you can click on 'start'. If you've done it right, the 'start' button will become a garbled mess. Click on it again and the game will start, but you'll only have Dave and whichever kid you clicked on in your team.

    Contributed by: Borgis_Khan 

Walkthroughs & FAQs

Type Name File Size
General FAQs FAQ by CPepin 59K
General FAQs FAQ/Walkthrough by Kevin Merrill 48K
General FAQs FAQ/Walkthrough by Geluf 47K
General FAQs Walkthrough by Aristotle 15K
General FAQs Walkthrough by Capricorn 49K
General FAQs Walkthrough by Anonymous 8K
Maps and Charts Maniac Mansion Map by snesmaster1 89K

Maniac Mansion Cheats For NES

  1. See The Credits (Japanese version)

    To see the credits, enter the following Japanese characters at the password screen: Press Right 4 times and enter the Japanese character. Press Right 1 time and Down 2 times and enter the Japanese character. Press Up 1 time and Right 1 time and enter the Japanese character. Press Right 1 time and Down 1 time and enter the Japanese character. Press Left 5 times and Down 4 times and enter the Japanese character. Press Up 3 times and Left 1 time and enter the Japanese character. Press Up 3 times and Right 1 time and enter the Japanese character. Now, you need to enter spaces to go to the second line of the password. So, from where the cursor is, press Right 4 times and Up 1 time and press the button on that option to enter spaces. Once you are on the second line, repeat the same process above and enter the same Japanese characters again. Then enter spaces yet again to go to the third line of the password and enter the same Japanese characters a third time. Once that's done, go to the bottom right option and press the button to be done. If done right, you'll get to watch the credits.

    Contributed by: ReyVGM 

  2. Sound Test (Japanese version)

    To get the sound test, enter the following Japanese characters at the password screen: Press Left 1 time and enter the Japanese character. Press Right 2 times and enter the Japanese character. Press Right 3 times and enter the Japanese character. Press Down 3 times and enter the Japanese character. Press Up 2 times and Left 3 times and enter the Japanese character. Press the button once again to enter the same Japanese character a second time. Press Down 2 times and Left 1 time and enter the Japanese character. Press Up 3 times and Right 1 time and enter the Japanese character. Press Down 4 times and Left 1 time and enter the Japanese character. Press Up 4 times and enter the Japanese character. Once that's done, go to the bottom right option and press the button to be done. If done right, you'll get the sound test.

    Contributed by: ReyVGM 

  3. Multiple Secret Messages

    While playing, press at the same time A + B + Select + Start to get up to 50 different secret messages.

    Contributed by: ReyVGM 

  4. Secret Passwords (Japanese version)

    At the password screen, enter the below. Note that, for the three "Hidden Message" passwords, you must enter the Japanese syllables named, not those letters themselves.

    Effect Effect
    Shi Ra To Ma Na Fu Hidden Message
    O Wa Hi Hidden Message
    Se Ta Ka Ya Ku Yo U Ka Hidden Message
    RESET Resets Game
    JALECO See Secret Message

    Contributed by: KeyBlade999, ReyVGM 

Walkthroughs & FAQs

Type Name File Size
General FAQs FAQ by CPepin 59K