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[[caption-width-right:256:Our heroes, fleeing in terror at the first sign of danger.]]
->'''Dr. Fred''': Our only hope now is to turn off my Sludge-O-Matic machine and prevent the toxic mutagen from entering the river! \\
'''Bernard''': Isn't it a little late for that, Doctor? \\
'''Dr. Fred''': Of course! That's why I'll have to do it... '''''yesterday!''''' To the '''''time machine!'''''

A [[Creator/LucasArts LucasArts]] graphic AdventureGame from 1993 and sequel to ''VideoGame/ManiacMansion'' by TimSchafer and [[TelltaleGames Dave Grossman]], co-designed with Creator/RonGilbert and inspired by the works of Creator/ChuckJones.

When we last saw uber-nerd Bernard Bernoulli, he had just helped save the wacky Edison family from the control of an evil meteor. Now, five years later, he receives a letter from the Edisons' friendly pet Green Tentacle desperately calling for his help again. It seems that Green's vicious brother, Purple Tentacle, had imbibed some toxic waste carelessly dumped by Dr. Fred Edison, and has mutated into an insane genius. Dr. Fred managed to capture the two tentacles, and is now going to put them ''both'' down. Bernard gathers his wacky roommates, Laverne and Hoagie (a spaced-out medical student and a fat heavy-metal roadie, respectively), and charges to the rescue. Unfortunately, when Bernard finds Green and releases him from captivity he also frees his evil brother Purple, who is now free to [[BoldInflation TAKE ON THE WORLD]]!!

Oh well, what possible harm could an insane evil mutant tentacle do?

As it turns out, quite a lot. Purple Tentacle uses his newfound intelligence to create a BadFuture where tentacles rule the world and humans are their slaves. [[NiceJobBreakingItHero Nice job freeing the megalomaniac, Bernard.]]

Doctor Fred attempts to send the three back in time one day, to shut down the toxic dumping and prevent Purple Tentacle from drinking it in the first place, but there is an accident (never use imitation diamond when your time machine recipe calls for the real thing, kids!) which scatters our heroes across four centuries. Hoagie is stuck in [[TheColonialPeriod colonial America]] during the creation of America as we know it, Laverne is trapped in Purple Tentacle's tentacle-run Bad Future, and Bernard must coordinate efforts in the present day to fix the broken time machine, bring his friends back, ''and'' save the world.

The immaculate voice acting, brilliant one-liners, clever puzzles, and memorable characters all conspired to make this one of the most popular of the [=LucasArts=] adventure games of all time, and probably better known than its predecessor.

DoubleFine announced a remaster for {{PC}}, {{PS4}} and PSVita.

----
!!This game has examples of tropes such as:

* AliensStealCattle: Parodied, as Purple Tentacle indulges in some CowTipping as the beginning of his crime wave. He even [[SpinningPaper makes the headlines]] for this.
* AlliterativeName: Bernard's last name is revealed as Bernoulli.
* AlwaysIdenticalTwins: Ned and Jed. As with all identical twins, one of them is right-handed and the other is TheSouthpaw.
* AmazingTechnicolorWildlife: The hamster is bright red. His owner, Ed, says that it is "brown".
* AmbiguousSyntax:
-->'''Bernard:''' That hamster really should get some exercise.
-->'''Ed:''' Well, Dad puts him to work down in the basement sometimes. But then he starts sweating, and then he gets wet... ...and then he gets cold, and then he refuses to work.
-->'''Bernard:''' Your dad or the hamster?
* AmusingInjuries: Lots of {{slapstick}} humour.
* AscendedExtra: Bernard is promoted from one of several characters that could team up with Dave in ''ManiacMansion'' to one of the three canonical heroes and the hero of this game.
* AstonishinglyAppropriateAppearance: Laverne is a CloudCuckoolander, and thus has an equally unhinged appearance, complete with different colored eyes and a MadEye.
* AttackOfTheMonsterAppendage: The game actually has Green and Purple Tentacles as living, independent tentacle-people.
* AttractiveBentSpecies: When Laverne disguises herself as a tentacle a guard starts flirting with her. Not enough to neglect his duties, unfortunately.
* AxCrazy: Oh Laverne... She never uses her scalpel as a weapon, however, claiming [[NoodleIncident she and her therapist have an agreement]].
* BadassMustache: The Mustached Tentacle who guards the mansion in the future. Described as a persistent human-hunter.
* BadDreams: Dr. Fred doesn't sleep because he has recurring nightmares of a ruinous business decision he made years ago.
* BadFuture: Tentacles have taken over the world, and they keep humans as pets or slaves.
* BagOfSharing: The game has the characters in three separate time zones, but they can share items by putting them into the time-travelling port-a-johns that are central to the plot. One of the first puzzles for the girl trapped in the future is how to GET to the port-a-john.
** However, you can't pass every item (sometimes requiring a different method of getting them through time), and some of them change when you do this.
** You can't pass living things ([[spoiler:requiring you to [[HarmlessFreezing freeze]] them]]). For two other items, you actually need them to change, requiring {{the Slow Path}} ([[spoiler:the sweater needs to be washed a hundred thousand times in order to fit a hamster]] and [[spoiler:wine needs to spoil and turn into vinegar]]).
* BangFlagGun: Needed to solve one of the puzzles.
* BathroomBreakOut: Laverne in the bad future.
* BeardOfEvil: Purple Tentacle has one in the future.
* Creator/BenjaminFranklin: He likes to play with his kite, or should we say, the "Frank-O-Copter".
* BerserkButton: Though Ed has spent years in therapy to control his anger and is now a calm man with a stamp hobby, you can undo years of therapy by "ruining" his stamp album (with disappearing ink). Returning the "fixed" album to him restores his sanity.
* BigBad: Purple Tentacle. PresidentEvil + FeelingOppressedByTheirExistence (humans) variety.
* BlatantLies: Why does this shady man wearing a ski mask try to break open a car's trunk with a crowbar? Well, he left his keys in the car. Bernard is okay with that. He even helps him to try getting his keys.
* BodyHorror: In the endgame, Bernard, Hoagie and Laverne get merged together in one body from travelling in the same time machine, similar to ''Film/TheFly''. [[spoiler: Subverted when it turns out they only got stuck in each other's clothes.]]
* BoundAndGagged: Happens to Green Tentacle and Dr. Fred.
* BookDumb: Hoagie is not really supposed to look like the brightest of the bunch but he zigzags the FatIdiot expectations as he's mostly ignorant about history -- he obviously has a practical mind, and a lot of the puzzles call for him to be clever.
* BoomHeadshot: Future Purple Tentacle always goes for a headshot, even though his [[CoolButInefficient weapon is nonlethal]] and has the same effect no matter where the blast hits. [[spoiler: This habit leads to his downfall.]]
* BowledOver: [[spoiler:How you get past the ten Purple Tentacles guarding Dr. Fred in the endgame.]]
* BreakingTheFourthWall: Laverne revives the frozen hamster in a microwave oven, then turns to the camera and tells the player that this only works in the future, and kids who try it in the present are taken away and put up for adoption. Bernard also {{lampshade|Hanging}}s this after "ruining" Weird Ed's stamps, commenting that he sometimes does things without knowing why, as if his body is "being controlled by some demented, sadistic puppet-master".
* BrickJoke: Laverne needs a tentacle costume to pass in the future, so Hoagie swaps the plans for the American flag with a picture of a tentacle. In the future, the Stars and Stripes changes to a tentacle outfit. In the end, [[spoiler:the characters comment on everything being back to normal... [[CloseEnoughTimeline and then a tentacle-shaped flag is run up a flagpole]].]]
** The protagonists frequently try to distract other characters using the "look behind you, a three-headed monkey" line from ''VideoGame/MonkeyIsland''. This pays off if you try it on Future Purple Tentacle in the end, when [[spoiler: the protagonists have seemingly merged into a three-headed primate, leading Purple Tentacle to respond: "The only three-headed monkey here is in front of me!"]]
* BrokenBridge: Only Bernard and Hoagie are playable in the early stages of the game; Laverne remains helplessly stuck in a tree until events have progressed to a certain extent in Hoagie's part of the story.
* BuildingOfAdventure: Dr. Edison's manor.
* CallForward: Hoagie gets stuck two centuries in the past and, in an attempt to get back to his own time, aids Ben Franklin in the discovery of electric current. In return, Franklin promises to name one of his inventions after him.
* CantTakeAnythingWithYou: Since the Chron-O-Johns can only transport "small, inanimate objects" between them, some puzzles involve getting around this.
* ChaosArchitecture: Hilariously, the layout of the Edisons' home is much more consistent in the five centuries covered in this game alone than between this game and [[VideoGame/ManiacMansion its predecessor]], set only a couple of years apart.
* ChekhovsGun: The bowling ball is available in Green Tentacle's room right from the start, but Bernard isn't strong enough to pick it up. [[spoiler:When the three characters get stuck together in the endgame, you can finally take it.]]
* ChivalrousPervert: The tentacle guard at the Pound, who is ultimately loyal to his wife even though he flirts outrageously with Tentacle-Laverne.
* ChuckCunninghamSyndrome: Basically, every playable character from the first game except for Bernard is gone without a mention. Even Dave.
** It's vaguely implied one of the Internal Revenue agents is Dave. If you listen to their conversation with each other after they imprison Dr. Fred, one of them remarks his wife's name is Sandy, the name of Dave's girlfriend from the original ''Maniac Mansion''.
* CloseEnoughTimeline: The plan of the heroes is to change the past yesterday. They end up changing the past quite a lot, but manage to save the world. [[spoiler:The Stars and Stripes ends up [[BrickJoke tentacle-shaped]], though.]]
* {{Cloudcuckoolander}}:
** Laverne. Alarmingly, she's a medical student, but she dreams of becoming a pathologist -- as in, someone in the basement who cuts up bodies to figure out how they died, and if [[PoliceProcedural cop shows]] haven't lied to us, they're always weird.
** Seriously though, {{Cloudcuckoolander}}s in the DoTT-verse are the rule rather than the exception.
* TheColonialPeriod
* ComedicSociopathy: You get to do some pretty unpleasant (but hilarious) things in the game, from pranking George Washington with an exploding cigar to [[spoiler:pushing Nurse Edna down the stairs.]]
* CommonplaceRare: You have to go to ludicrous lengths to find... a bottle of vinegar. [[spoiler: Namely, giving a bottle of wine to Thomas Jefferson so he can bury it in the time capsule, and having Laverne pick it up 400 years later.]]
* CompanionCube: This game features yet another appearance -the last in a Creator/LucasArts game- of [[MythologyGag Chuck the Plant]], this time a cactus.
** Dead Cousin Ted, who is as dead as it gets, which doesn't prevent you from holding entire conversations with him. In fact, you get force him to join in your adventure ''twice'', saving Dr. Fred and then participating in a pet show.
* ConcealingCanvas: Doctor Fred's safe is hidden behind a portrait of him (wearing a powdered wig).
-->'''Bernard''': Handsome, in a way, but I'm glad he finally accepted his hair loss.
* TheConstant: The same house exists for over 400 years, from the days of the FoundingFathers to the future where the tentacles have taken over the world, although it's much more metallic in the future. Also, many objects in the house can be found in more than one time period. This is often used by the main characters to affect one or more future time periods. For example, since only inanimate objects can be passed through the [[OurTimeMachinesAreDifferent Chron-O-John]], the only way to send a hamster to Laverne in the future is to put it in the [[HumanPopsicle freezer]], which is still around 200 years from now. Apparently, no one has bothered to look inside in all this time. The time machine is still in the basement in the future (though it's broken and useless), and the laundry room doesn't change in the slightest - the coin-operated dryer Bernard sets running in the present is still going two hundred years later (he fed it a ''lot'' of change).
* CopyProtection: One of the tasks you must do in order to actually start playing the game for real is to pass a small task that can only be solved by using [[AllThereInTheManual diagrams included in the manual]]. Nowadays, it takes less than a minute to find the manual on Website/{{Google}}.
** Also, only the diskette version required the copy protection; the game was produced at a time when [=CDs=] were a fairly new technology and the layman's ability to copy them was limited, if it existed at all, so the CD version didn't bother.
* CorrelationCausationGag: One of the puzzles invokes the "it always rains after you wash your car" [[LogicalFallacies universal law]].
* CoversAlwaysLie: The cover shows Purple Tentacle chasing the heroes outside the mansion with his ray gun. In the game, it is the ''bearded'' Purple Tentacle from the future who chases the protagonists with the ray gun, he does it ''inside'' the mansion, and this is when [[spoiler:the three heroes are "stuck" together]].
* CowTipping: [[BigBad Purple Tentacle]] indulges in some cow tipping as the beginning of his crime wave. He even makes the headlines for this.
-->Rash of Cow Tipping Baffles Police - Triangular Man Spotted at Scene.
* CreepyMonotone: This trope has Laverne written all over it.
** Frighteningly enough, Ed talks with one in his "sane" mode.
* TheCuckoolanderWasRight: John Hancock suggests adding an amendment to the Constitution saying the President has to be a human being. Had this been accepted, it would have prevented Purple Tentacle's rise to power, but Thomas Jefferson dismisses it as a stupid idea.
** Jefferson also vetoes Hancock's suggestion to illegalize dumping toxic sludge in rivers, on the same grounds.
** An optional conversation allows Hoagie to suggest getting to work on the national debt. Jefferson scoffs that America is too prosperous to ever go into debt. ([[ArtisticLicenseHistory Even though America was in debt even back then.]]) This was also probably a joke about how the economy and national debt were key issues during the 1992 presidential election.
* CuttingOffTheBranches: Canonically, Bernard was in the rescue trio in ''Maniac Mansion''. The optional hamster-microwaving event is also canon, as is Green Tentacle's recording contract, making the third kid either Syd or Razor.
* DayOfTheJackboot: Purple enacts a totalitarian takeover of [[OppressiveStatesOfAmerica America]] and the world.
* DeadGuyOnDisplay: Dead Cousin Ted, in all three time periods. Also, it appears to be the same dead guy.
* TheDevTeamThinksOfEverything: In the final sequence, you can attempt to go up to the attic and close the door, but Bernard will say that Purple Tentacle might lock it and trap them up there. There is no reason to go up there in the first place, so it's surprising that there's a specific line to deal with such a situation.
* DilatingDoor: In the future part, the doors open vertically with the original ''Series/{{Star Trek|The Original Series}}'' sound.
* DoesThisRemindYouOfAnything: The ten Purple Tentacles blocking the Sludge-O-Matic in the finale are arranged in a manner you need to recognize to work out the solution. [[spoiler:The solution is a [[BowledOver bowling ball]].]]
* DontTryThisAtHome: Don't attempt to revive a frozen hamster in a 20th century microwave.
* DrivenToSuicide: The first time the player meets Dwayne, he is attempting to shoot himself in the head. Fortunately, [[BangFlagGun he fails at this just as he fails at everything else in life]].
* DualWorldGameplay: The three characters are in three different time periods and they have to work together to solve the problem.
* EasilyConqueredWorld: Just because ''one'' Purple Tentacle sprouted tiny arms and feels "smarter" and "more aggressive" he believes that he can TakeOverTheWorld and enslave humanity. He succeeds.
* EmbeddedPrecursor: The UrExample. Ed's computer has a fully playable ''Maniac Mansion''. Just like the original version, it only has one save slot.
* EverythingsBetterWithCows: In the introduction, the protagonists run into a barn with their car and get a cow inside their vehicle. They crash again and the cow turns to the camera and raises its hoof in a "blow this" gesture. There is also Purple Tentacle's first appearance in the newspapers about turning upside down cows.
* EvilLaugh: MWAHAHAHAHAHA!!!
* EvilOldFolks: Future Purple Tentacle.
* ExactlyWhatItSaysOnTheTin: The Chron-o-John is a time-traveling outhouse.
* ExplosiveCigar: You solve a puzzle to get one, and you use it in a second one.
* ExpressiveMask: Bernard has expressive glasses, as shown in the intro.
* {{Expy}}: Bernard has an expy in the form of Jackson in the amateur adventure game ''No-Action Jackson''.
** He also appears with slight variations (but with the exact same voice) as the three Stuckey's employees in ''SamAndMaxHitTheRoad''.
* ExtyYearsFromNow: The game was made in 1993. Therefore, the events in the past are set in 1793, when the Constitution was drafted, and the events in the future take place in 2193.
* FalseReassurance: Just about to go back in time, Bernard asks Dr. Fred:
-->'''Bernard''': "Have any people been hurt in this?"
-->'''Dr. Fred''': "Of ''course'' not! This is the first time I've tried it with ''people''!"
* FalseTeethTomfoolery: George Washington. And the horse. [[spoiler:And dead cousin Ted.]]
* FanOfThePast: There are two rooms in the future mansion that seem dedicated to UsefulNotes/TheAmericanRevolution and another to TheSeventies.
* FanSequel: ''[[http://www.maniac-mansion-mania.com Maniac Mansion Mania]]'', a series of fan sequels set in the world of ''Maniac Mansion'' and ''Day Of The Tentacle'', consisting of over a hundred games (although they vary strongly in terms of quality and length). Every person is allowed to contribute a game (called 'episode'), as long as it adheres a few rules. Most of the episodes are only avaliable in German, although a few where also released in English, French and Spanish.
* FeelingOppressedByTheirExistence: The mutated Purple Tentacle rules a BadFuture where he and his most loyal followers blame all humans for Dr. Fred's creation of their "ungainly forms" and so wish to exterminate them all.
* {{Foreshadowing}}: When Bernard is talking to Green Tentacle about what Purple Tentacle's plans might be, you can choose between the guesses "throw old ladies down staircases", "perform cryogenic experiments on small animals", and "invent a shrink ray". [[spoiler:All of these things happen in the game. Subverted by the fact that Purple Tentacle only invents the shrink ray; the two other things are done by [[ComedicSociopathy Bernard]].]]
* FreeWheel: The intro sequence has the car wreck offscreen with a bouncing wheel.
* GameWithinAGame: This game contains the original ''VideoGame/ManiacMansion'' in the game. It can be accessed from Weird Ed's computer.
* GeekPhysiques: Bernard and Laverne.
* GeniusDitz: Bernard.
* UsefulNotes/GeorgeWashington: He's got wooden teeth ([[spoiler:and later, chattering novelty ones]]), and he seems obsessed with cutting down cherry trees! NeverLiveItDown...
* GravityIsAHarshMistress: People pedal in the air for a moment before the long drop, or reach up to grab something they left behind.
* GreenAesop: The Sludge-o-Matic and the pollution it generates are what start all the problems. Somewhat played with by the fact the Sludge-o-Matic exists solely to create toxic goo to dump into the water.
-->'''Dr. Fred''': You can't have a lab like this and not spew poisonous filth! [[PeerPressureMakesYouEvil All the other evil scientists would laugh]]!
* GuideDangIt: While Creator/LucasArts takes a gentle approach to difficulty a number of the game's puzzles may not be very intuitive:
** If you don't realize [[RewardingVandalism vandalism]] and craziness is a given in the comical adventures is hard to guess you have to [[spoiler:break a candy machine with a crowbar]] except by randomly guessing or experimenting with every item in your inventory?
** [[spoiler:Closing the door of a room you've just entered to get a set of keys.]]
* {{Hammerspace}}: All three heroes can keep a huge amount of items in their tiny pockets. Particularly outrageous is Bernard picking up a pile of coins which is bigger than he is and probably weighs more too.
** Bernard picked up enough quarters to keep the dryer running for 200 years. The drier ran half an hour for every quarter inserted, and there are about 1,753,200 hours in 200 years. Bernard would have had to insert 3,506,400 quarters into the drier, weighing about 19881kg and totalling $876,600 dollars.
** When Ned breaks down in tears after he messes up the statue he was carving, his brother Jed cheers him up by offering him a cappuccino. A ''steaming cup of cappuccino on a plate that he plain pulls out of his jacket''.
* HandRubbing: Dr. Fred, the MadScientist, has a sprite whose static animation consists of this. Although in Fred's case, there's nothing particularly sinister about it -- he's just jittery from the permanent caffeine high he submits himself to so as to avoid sleepwalking (by avoiding sleeping).
* HarmlessFreezing: That poor hamster...
* HeavySleeper: The sleeping conventioner.
* HeroicComedicSociopath: The [[MicrowaveTheDog hamster meets microwave oven]] incident from ''Videogame/ManiacMansion'' is canon and Ed was [[DeconstructedTrope mentally scarred by it]]. In this game you apparently ruin his only valve of escape, a book of stamps. [[BerserkButton He doesn't take it well]] but letting him know the book is fine [[VideoGameCrueltyPotential is optional]]. The fragile ego of a sculptor is also smashed.
-->'''Bernard''': Well, you know what they say, if you want to save the world you got to push a few old ladies down the stairs.
* HiddenEyes: You will never see Hoagie's eyes.
** Also, [[spoiler: the IRS agents.]]
* HighPressureEmotion: Wild Ed Edison gets this when Bernard messes with his stamp collection.
* HitlerCam: During Purple's "Take on the World!" speech. [[http://www.cyberaxe.net/gallery/Miscellaneous%20Art%20and%20Graphics/Take%20on%20the%20World.png picture]]
* HoistByHisOwnPetard: [[spoiler:The future Purple Tentacle is hit by his own shrink ray and squished by the heroes.]]
* HumanPopsicle: Or rather, a ''hamster'' popsicle. The Chron-O-Johns are incapable of transporting organic matter, which means that a ''hamster'' from the present day gets the popsicle treatment to be used in the future. Restoring the hamster requires nothing more than a microwave and a sweater that's been forced to take TheSlowPath by spending two hundred years in a tumble dryer. Although the microwave is of (presumably) more advanced tentacle manufacture, and may operate differently. Laverne even lampshades this, pointing out that under normal circumstances, putting a hamster in the microwave leads to horrible consequences, and children who do that are taken away. Her monologue is also a reference to the game's predecessor, ''VideoGame/ManiacMansion'', where putting a hamster in the microwave causes it to explode. No cryogenics involved in that game, though.
* HumansAreUgly: The tentacles from the future find humans ugly... Laverne gets it especially bad from a tentacle who instantly describes how he finds her repulsive (then again, she ''does'' look weird). Conversely, after she dons her stars-and-stripes disguise, every tentacle around finds her drop-dead gorgeous.
* HyperspaceArsenal: The characters' entire inventory is in their pockets. And pretty much anything can go through the Chron-O-John so long as it's not living matter or too big. Laverne is briefly discomforted when she drops the frozen hamster down her top. Bernard whips a rope into the air and opens his pocket for it to fall neatly inside it.
* ICantReachIt:
** Hoagie will not look inside a drawer inside Ben Franklin's room, saying that he doesn't "look inside other people's underwear"
** If Bernard puts the sweater inside the washing machine without setting it, and Laverne in the future picks it up, she will say that it is not her size and she will immediately put it back in.
* IdenticalGrandson: Dr. Fred Edison's ancestor Red Edison looks exactly like him. His descendant looks like him, with a beard. This applies to the descendants of Edna and Weird Ed as well. The cigar salesman looks exactly like Benjamin Franklin, and could be a descendant; the same could be said about Arnold looking like George Washington and Dwayne looking like John Hancock.
* ImpactSilhouette: Bernard falls off the roof (for a second time) and leaves a Bernard-shaped hole in the ground.
-->'''Bernard''': It's a hole. Shaped like me. I'm not proud of it, but there it is.
* ImprovisedLightningRod: Hoagie is trapped in colonial times and needs a super-battery to power his time machine. He must help Creator/BenjaminFranklin perform his legendary kite experiment, hiding the battery in the kite so that lightning strikes the kite and charges the battery.
* IncredibleShrinkingMan: Purple Tentacle eventually designs a shrinking ray that he decides to use on the protagonists.
* InstantHomeDelivery: The diamond from ''Couch-potato Shopping'', courtesy of ''Pronto Post Light-Speed Delivery''
* InstantSedation: Of a sort -- Dr. Fred is so sleep-deprived and dependent on caffeine that giving him ''decaf'' is enough to knock him out.
* InThePastEveryoneWillBeFamous: Hoagie manages to run into George Washington, Thomas Jefferson, Benjamin Franklin, John Hancock, and Betsy Ross, without even leaving the Edison manor.
* IntimidatingRevenueService: Dr. Fred discovers that you don't mess with the IRS, because they'll tie you up in red tape (literally!) and leave you in the attic while they audit your accounts.
* {{Irony}}: Many of Hancock's suggested legislations in the 1790s storyline would have saved the future USA from the tyranny of the Purple Tentacle (strict anti-pollution laws; requiring the President to be a human being...). George Washington shoots them all down.
* KnifeNut: Bernard can use Laverne's scalpel to stab, with a ''maniacal expression'', [[spoiler:inflatable balloon clown Oozo and the cigar salesman... except for the latter, where he will either give up or be surprised by him noticing]].
** Implied to be the reason Laverne herself never uses her scalpel, as any time you try, she simply says "I can't, my therapist and I have an agreement".
* LabcoatOfScienceAndMedicine: A puzzle-related object in Red's lab.
* {{Leitmotif}}: One for each character, heard whenever the player switches between them. Bernard's resembles the main theme, Hoagie's is kind of surf-inspired, and Laverne's sounds like a children's tune that's a bit... off.
* LetterMotif: Every male member of the Edison family has a name ending in "-ed": Fred, Ed, Ted, Red, Ned, Jed, Zed and Ved. The two female members shown are called Edna and Zedna.
* LighterAndSofter: Compared to the original ''Maniac Mansion'', which had some pretty dark and gory parts.
* LiveItem: Weird Ed's hamster. [[spoiler:Twice.]]
* LogoJoke: After the credits, a golden Purple Tentacle scares away and replaces the Creator/LucasArts figure
* LookOverThere: Happens several times in the game. The line "Look behind you, a three-headed monkey" from ''VideoGame/MonkeyIsland'' is the one used the most frequently.
* LostForever: The hubcap, if you put it in the Recyclatron. [[spoiler:[[RedHerring Not that you'll ever need it]]]].
** It is the only item Laverne will accept to put in, since she knows of its... utility.
* MadDoctor: Dr. Fred. Laverne is a mad doctor-in-training.
* MadEye: Laverne has one of these. Thanks to [[AmbidextrousSprite sprite mirroring]], it's always facing the player.
* MadScientist: Dr. Fred Edison, obviously.
** He even states that he owns the Sludge-O-Matic to deliberately just create polluting slime, so that the other mad scientists don't make fun of him.
* MeanwhileInTheFuture: Numerous events are shown as events in the past change elements of the future.
** Once you [[spoiler:paint the kumquats on the tree to look like cherries (in Revolutionary times), you can get UsefulNotes/GeorgeWashington to [[NeverLiveItDown chop it down]]]]. Four hundred years later, the huge tree that Laverne is hanging from suddenly vanishes.
** After Hoagie gives Betsy Ross [[spoiler:a tentacle chart]] as a flag design, we see the modern flag change in a puff of sparks.
** When Founding Fathers add an article "Every American should have a [[spoiler:vacuum cleaner]]", it appears in the secret lab in the future.
** Making Jed and Ned switch places when modelling causes the statue in the surveillance office to be mirror-flipped, [[spoiler:meaning that Edna can't grab on to it when Bernard pushes her down the stairs.]]
* MicrowaveTheDog:
** The original incident is canon and the owner of the animal [[DeconstructedTrope needed years of therapy to overcome the trauma]].
** A puzzle is solved by really using a future microwave to dry a live hamster (yes, it does survive, and Laverne remarks out loud that kids trying to imitate the gesture would have bad things happen to them).
* MirrorsReflectEverything: Instrumental in [[spoiler:defeating Purple Tentacle. The protagonists convince Purple Tentacle to use his shrink ray on Dr. Fred. The ray reflects off Dr. Fred's surgeon's head mirror, shrinking Purple Tentacle to the size of a worm.]]
* MirrorWorld: Done to great effect. The game's three protagonists are stuck in the same mansion, but one is in the present, one is 200 years in the past and one is 200 years in the future. A number of puzzles involve taking advantage of various objects that exist in the mansion in more than one time.
* MonsterClown: Inflatable clown Oozo, in the eyes of Bernard.
* MorallyAmbiguousDoctorate: While Dr. Fred is a good guy in this game, he still pollutes the river just to get mad scientist cred, and does some other morally dodgy things (such as planning to kill Green Tentacle for no reason whatsoever).
** While Laverne is just a med student, she seems to be heading for one of these.
* MostDefinitelyNotAVillain: Laverne [[spoiler:disguising herself as a tentacle]] and announcing she is one.
* MultipleHeadCase: Near the end, the three protagonists appear to get turned into a three-headed hybrid by a [[TeleporterAccident time machine accident]]. [[spoiler:It later turns out they had simply gotten stuck inside one set of clothes.]]
* MummiesAtTheDinnerTable: For an example with a ''literal'' mummy, there's Dead Cousin Ted, the permanently-deceased-and-mummified member of the Edison family, who the Edison family love to hang around various places in the house, repurposing him as a bird bath, a receptionist and a dress-up mascot. Laverne even remarks that he's her favourite out of the Edisons.
* MustHaveCaffeine: Dr. Fred drinks coffee to keep himself awake. ''All the time''.
--> '''Bernard''': How's Dr. Fred?
--> '''Nurse Edna''': He's doing much better now that he's stopped sleepwalking.
--> '''Bernard''': How did he stop sleepwalking?
--> '''Nurse Edna''': He stopped sleeping.
** Later, if given decaf instead of regular coffee, he immediately falls asleep (standing up) and begins sleepwalking.
* MythologyGag: Laverne [[spoiler:has to put a frozen hamster in the microwave]], an optional event in VideoGame/ManiacMansion -- [[VideoGameCrueltyPotential minus the frozen part]] - that could [[VideoGameCrueltyPunishment get you killed]]. She even [[LampshadeHanging points out]] how screwed up this is if you do it in RealLife. Basically, the hamster survives because TechnologyMarchesOn in the 22nd century, and of course the RuleOfCool.
* NeverWakeUpASleepwalker: Bernard won't wake up sleepwalking Dr. Fred because he has heard it is very bad to do so.
* NiceHat: The hunter tentacle has a panama and a large mustache to match. The judges wear fezzes. And of course, colonial-era Ted Edison has the best hat of them all, a tricorn. Hoagie can even compliment him on his nice hat.
* NiceJobBreakingItHero: Bernard decides to free the Tentacles who are being held captive by Dr. Fred. Including Purple Tentacle.
--> '''Dr. Fred''': What have you done this time, you meddling milquetoast? Now Purple Tentacle is free to use his evil mutant powers to take over the world, and '''ENSLAVE ALL HUMANITY'''!
--> '''Bernard''': Oops.
** Let's not forget this line.
--> '''Laverne''': [[LampshadeHanging This is all your fault, Bernard.]]
** Justified, as for some reason Dr. Fred also wanted to get rid of Green, who didn't do anything. The one who truly deserves this trope is Dr. Fred for causing environmental damage for petty reasons, which caused Purple to mutate after drinking from it.
* NoCanonForTheWicked: Averted, the game assumes the player [[VideogameCrueltyPotential put the hamster in the microwave]] in its predecessor, ''VideoGame/ManiacMansion''.
* NoOSHACompliance: The only reason Doctor Fred even ''has'' a machine that spews toxic waste is so the other {{mad scientist}}s won't laugh at him.
* NotNowKiddo: Bernard needs Dr. Fred to sign a contract in order to receive millions of dollars necessary for Bernard's save-the-world plans. Dr. Fred, however, refuses to sign, as he is too busy trying to think of a way to save the world.
* ObjectCeilingCling: There's a slab of fake vomit stuck to the ceiling of the hotel lobby. The characters comment on it with varying shades of distaste. Eventually you have to get it loose to solve a puzzle.
* ObviouslyEvil: Look at Purple Tentacle and Green Tentacle. Purple has black frowning eyebrows, Green doesn't. Guess which one is evil.
* OffscreenTeleportation: When Bernard and Dr. Fred go look for the plans, the latter goes up the stairs. If Bernard immediately picks up the plans that are hanging on the wall, Dr. Fred will then come out from the left of the screen. See TookAShortcut below.
* OohMeAccentsSlipping: Not an accent, but Laverne's voice. If you try to make her look at all kind of objects "flushed" from Bernard and Hoagie, the actress will eventually speak in her normal, deeper voice.
* OpaqueNerdGlasses: Bernard's. The only time we get to see his (tiny) eyes is during his IdleAnimation, where he takes his specs off and cleans them. We also get to see them among his [[InexplicablyIdenticalIndividuals look-alikes]] in ''SamAndMaxHitTheRoad''.
* OrphanedPunchline: In a BadFuture where walking, animate tentacles rule the world, you can overhear a tentacle judge ending some anecdote with "...AndThenISaid to her, 'That's ''not'' my suction cup'!"
* OurTimeMachineIsDifferent: The "[[ThingOMatic Chron-O-John]]", a contraption that includes a car, a huge diamond, traffic lights and three portable toilet cubicles.
* OurTimeTravelIsDifferent: This game follows the "wormhole" time-travel method, in which everyone is essentially in different dimensions and use a time-tunnel of swirling lights and colors to go back and forth.
-->'''Laverne''': This must be that Woodstock place Mom and Dad are always talking about!
* PantyShot: Laverne, when she is shown hanging from her panties in the future.
** [[FanDisservice Thankfully]], they're just bloomers.
* PaperThinDisguise: Laverne disguises herself [[spoiler:as a tentacle by using a tentacle-shaped flag]] that ''leaves her head, her arms, and her feet completely visible''. Inexplicably, the tentacles think she's hot stuff.
** Not to mention that to avoid tripping over her disguise she lifts the bottom half whenever she runs, clearly exposing her legs.
* ParentalBonus: Laverne's "goodbye" line to the future Purple Tentacle is "If you'll excuse me, I've got something in the oven." "[[ChivalrousPervert Anyone I know?]]" is his reply.
** It's pretty bad when the more innocent alternative is that tentacles [[ImAHumanitarian eat humans]].
* PlayerNudge: The characters will occasionally do this. Perhaps the most obvious is Laverne, who, when she's captured and sent back to the Kennel, will say "If only there was some kind of disguise". The monologues with Ted the mummy are all about this.
* PointAndClickGame
* PonyExpressRider: Hoagie has to send a letter via Pony Express so that Bernard can finish his part of the quest. This ignores the fact that Hoagie was in the late 18th century and the Pony Express only existed in the mid 19th century. Not so much ignorance as artistic license, as the game has several other deliberate historical inaccuracies.
* PosthumousCharacter: Played with. Dead Cousin Ted, who briefly appeared in ''Maniac Mansion'', is now found in all three time periods (apparently he's been dead for centuries). His presence throughout history actually turns out to be very beneficial.
* PresidentEvil: The Purple Tentacle manages to become POTUS and then enslave all the humanity.
* PuzzleBoss: [[spoiler:Use the bowling ball on the tentacles, then trick old Purple Tentacle into shooting Dr. Fred.]]
* RecursiveCanon: Doctor Fred never saw a penny from the TV series or the [[VideoGame/ManiacMansion video game based on his family]].
* RedBoxingGloves: Spring-mounted boxing glove, which is powerful enough to knock a main character across the room. Fortunately she was a bit loopy to start with.
* RedHerring: [[spoiler: The hubcap, the recyclatron, and the Medula-Oblongator]]
* ReflectingLaser: [[spoiler:The shrinking ray bouncing back off of Dr. Fred's otolaryngologists mirror.]]
* RetGone: Laverne lands 200 years in the future, awkwardly hanging by her underpants caught in a tree. In order to free her, the tree has to be cut down before it can grow that size, causing it to disappear underneath her.
* ReusedCharacterDesign: A lot of characters (especially Edisons) have at least one near-double, making the number of truly individually designed characters a minority.
* RuleOfFunny: Trumps sense or realism every time. There's even a paragraph in the manual saying so.
* SanDimasTime: The game seems to utilize this trope to an extent: The three main characters are stuck in the present, 200 years in the past, and 200 years in the future respectively, and events that happen in the past affect the characters in the future. For example, one character in the past can convince George Washington to cut down a tree in the yard, causing the tree to vanish into a stump in future timelines and another character (who is stuck to the tree by her underwear) to fall on her ass.
* {{Satire}}: All of the Founding Fathers are noticeably different from the way history tends to portray them.
* SetRightWhatOnceWentWrong: The premise of the game. Dr Fred sends the trio back to "yesterday" to turn off his Sludge-o-Matic machine, preventing Purple Tentacle's exposure to the mutagen sludge, its StartOfDarkness, world conquering darkness that is.
* TheSeventies: Ted's room in the future mansion is filled with 70's objects such as a lava lamp and an Elvis lamp. Ted even wears a leisure suit.
* ShoutOut: Many, as it is customary in Creator/LucasArts games. For instance:
** ''Franchise/StarWars'', with a Darth Vader calendar and a Stormtrooper helmet around. The number for the TV shopping channel is [=1-800-STARWARS=] (Creator/LucasArts' customer support number at the time). Bernard also makes a jolly remark at finding a Quarter made in the year [[MythologyGag 1977]].
*** "Help us, Dr. Edison. You're our only hope!"
*** What appears to be a star shaped model hanging up in Bernard's dorm room is really a space mine from ''Videogame/XWing''.
** ''VideoGame/MonkeyIsland'', where Hoagie talks about a live-action ''VideoGame/TheSecretOfMonkeyIsland'' movie and the "three-headed monkey" distraction.
** ''SamAndMaxFreelancePolice'', where a portrait of Max appears in a hallway in the past. Bernard from this game even makes an appearance in ''Videogame/SamAndMaxHitTheRoad''.
** "Wait! You can't all go in the same stall! ''DIDN'T YOU SEE [[TheFly THE FLY]]?''"
** The title is a reference to the thematically similar ''Literature/TheDayOfTheTriffids''.
** "[[Series/TwinPeaks Damn Good Coffee!]]"
** "[[Series/MisterEd A horse is a horse of course.]]"
* ShrinkRay: The Purple Tentacle invented one of these, and used it on the heroes while chasing them. They finally convince him to take out his anger on Dr. Fred instead, but the ray is reflected on his medical headband onto Purple, and that's how they manage to defeat him.
* ShrunkInTheWash: Used in the puzzle where you must put a wooly sweater in a drier for 100 years so it'll become wearable for a bald hamster.
* SkunkStripe: Laverne uses white correcting fluid to make a black cat get a white stripe so that it'll pass as a skunk.
-->'''Laverne''': Who says you can't learn anything from [[WesternAnimation/PepeLePew cartoons]], eh kitty?
* SlapstickKnowsNoGender: Even Laverne can get violently punched in the face by a mechanical boxing glove.
* SlasherSmile: Bernard has one very briefly before slashing an inflatable Oozo the Clown. [[http://static.tvtropes.org/pmwiki/pub/images/action041_8279.gif picture]]
** He'll do it again if one tries to stab the explosive cigar salesman.
* SlidingScaleOfAnthropomorphism: The tentacles are mutant-[[AttackOfTheMonsterAppendage not embodied to a monster]] sentient beings, with human-like mouth, facial hair, personality and slightly lower size. The plot kicks in when Purple becomes more mutant-ish growing two little arms and getting smarter and bolder.
* TheSlowPath: Objects can frequently be flushed through time directly and immediately by the Chron-O-John, but living organic matter needs an alternate transport; thus, a hamster travels the slow path as a [[HumanPopsicle Hamster Popsicle]]. Some objects can change form with slow pathing, too - a bottle of wine left in a time capsule for four hundred years isn't going to be much like wine by the time it reaches the other end, and a sweater left in a tumble dryer fed with a mountain of quarters will have somewhat dramatically shrunk.
* SnipeHunt: Subverted -- the player actually has to locate a left-handed hammer.
* SpinningPaper: Used over the course of the game to show Purple Tentacle's rise to power in the present day. The {{cutscene}}s are tied to Bernard and an [[InUniverseGameClock internal clock]] so in a game of below-average length some may not be triggered at all. They are in order:
** AliensStealCattle: "Rash of Cow Tipping Baffles Police - Triangular Man Spotted at Scene".
** PhantomThief: "Froofroo Emerald Stolen! Circular Prints Left Behind".
** EngineeredHeroics: "Tentacle Rescues, Returns Emerald - Mayor Congratulates Purple Hero".
** VillainWithGoodPublicity: "Purple Tentacle is Man of the Year - Tentacle Visits TheWhiteHouse". [[http://s9.postimage.org/j2nf6hph9/Manof_The_Year.jpg Headline]]
** CaligulasHorse: "Tentacle to run as GOP VP - Helms miffed". [[http://s12.postimage.org/bv882ximz/Take_That.jpg Headline]]
** TwentyFifthAmendment: "President Ailing, Tentacle Steps In - ''I'm in Charge Here''". [[http://s18.postimage.org/lp4v9sdhz/Tentacle_Take_Over.jpg Headline]]
** PresidentEvil: "Tentacle Amends Constitution - Humans Now Slaves" [[http://s14.postimage.org/dtr43a0yn/Tentacle_Take_Over2.jpg Headline]]
* StableTimeLoop: If you take the right dialogue options in the very last conversation, Purple Tentacle will reveal that he was the one who sent Dr. Fred the Sludge-O-Matic in the first place using the Chronojohn.
* SuicideAsComedy: A depressed novelty salesman attempts to kill himself by shooting himself in the head, except he's using a flag gun instead of a real one. He then gets more depressed, saying he can't even properly kill himself.
* SwissBankAccount: Dr. Edison has a Swiss Bank account that's almost completely depleted. One of the more significant puzzles in the game requires you to get access to the account through trickery, then find a way to get a lot of money into it, so that you can use the money to buy a really big diamond.
* TakeOverTheWorld: Purple Tentacle, when he gets mutated:
-->I feel like I could... like I could... TAKE ON '''THE WORLD'''!
* TalkingAnimal: The horse in the Past mansion. No explanation how he is able to; he just explains to Hoagie that other horses probably had nothing to tell him.
** The tentacles may also qualify, although they are only ''parts'' of an animal (octopi).
* TeamworkPuzzleGame: Three characters working four-dimensional puzzles no less.
* TemporalParadox: There are several examples. Thought temporal paradoxes are mostly averted during the main game, where the protagonists are scattered through three periods, some sever paradoxes occur after the second time-travel where the protagonists (and the tentacles) travel to yesterday.
** The whole point of the plot is preventing an event from happening, thus erasing the need for the time-travel. However it is an essential part of the gameplay that timetravels do affect the present.
** During the endgame (that is set one day before the present) it is possible to remove the "Help Wanted" sign from the window, that will be picked up from Bernard in the present. Also the bowling-ball should be in a different place.
** According to the dialogue between the protagonists and Purple Tentacle, the Sludge-O-Matic, what made purple tentacle an insane genius, was invented by himself, who send it back to the present to Doctor Fred. (This makes their heads hurt)
** Purple Tentacle brings a lot of future versions of himself back to the day before the present. So if one of them get hurt or can't return to the future, this would create some horrible paradoxes.
* TheThemeParkVersion: In the [[UsefulNotes/TheAmericanRevolution Revolutionary America]] period, the developers clearly [[ArtisticLicenseHistory threw away the history book]] whenever it was [[RuleOfFunny funnier]] or more [[AcceptableBreaksFromReality made the game better]] to do so:
** The Franklin lightning experiment took place nearly 40 years before the Constitutional Convention.
** The design of the first US flag predated the Constitutional Convention by roughly a decade.
** John Hancock and Thomas Jefferson did not attend the Constitutional Convention (Jefferson wasn't even in the country at the time).
** The Pony Express didn't exist until about 70 years after the Constitutional Convention.
* ThemeNaming: All Edisons have a first name containing the syllable "ed". In the present, we have Fred, Edna and Ed. In the 18th century, Red, Jed and Ned. In the 22nd century, Zed, Zedna and Ved. Plus, of course, there's Dead Cousin Ted, who's from Ancient Egypt.
* ThemeTwinNaming: The Edison twins of the past, Jed and Ned.
* ThingOMatic: The sludge-spewing machine, Dr. Fred's Sludge-O-Matic, which had no purpose except to pump out a sufficiently impressive stream of toxic sludge. (No mad scientist's lab is respectable without one).
* UsefulNotes/ThomasJefferson: He likes logs to a disturbing degree.
* [[TwoBeingsOneBody Three Beings, One Body]]: Seemingly played straight at the end of the game [[spoiler:when Laverne, Hoagie, and Bernard use the same Chron-O-John, they get fused into a three-headed monstrosity with Hoagie's arms and Laverne's legs, a la ''TheFly''.]] However, in the final scenes, [[spoiler:Doctor Fred uses an X-ray to show that they were just stuck in the same ''clothes'' together and they just thought they had become the same person.]] Anyway, it's [[RuleOfFunny a good laugh]].
* TheThreeTrials: The entire game between the prologue and the endgame. Interestingly done in that each task is set in its own time period and pursued by a different character.
* TimeCapsule: A wine bottle placed into a time capsule results in a bottle of vinegar hundreds of years later.
* TimeMachine: Obviously. Appears to be built around three portaloos, an old car, and a honking big diamond.
* TimeTravel: The point of the game.
* TimeyWimeyBall: Pretty much the only way to take the wacky events of the game. It runs on SanDimasTime to allow the characters to flush small, inanimate objects to each other through time via their time machines. When the time stream is altered, any changes are visible to the characters and happen with a "magic" effect and sound, and at the end of the game, [[spoiler: the characters travel back in time to yesterday to turn off the machine that caused the BigBad to become evil,]] thus causing a huge paradox and defeating the point of them even disembarking on their adventure in the first place. But [[RuleOfFunny that's okay.]] Doctor Edison's ''original plan'' (not taking into account the diamond breaking and the trio ending up in different eras) was for them to simply go back in time and turn off the aforementioned machine.
* TookALevelInBadass: Bernard is much braver than he was in ''VideoGame/ManiacMansion''.
* TookAShortcut: When you find the super-battery plans in ''VideoGame/DayOfTheTentacle'', Dr Fred appears from a corner of the room with no access. After he goes off to the time machine, Bernard [[LampshadeHanging asks]] "How did you get over there?"
** That's a tame example too: people constantly walk off one side of the screen and reappear on the other. It's occasionally given an "Um..." beat, but no one really says anything.
* TwoBeingsOneBody: ''Film/TheFly'' was brilliantly spoofed in the climax: three characters use a time machine at the same time (Dr. Fred even mentions the movie by name as they did this), and end up fused into a three-headed, six-armed freak; at the end of the game, however, it is revealed that they weren't mashed up at all, but instead during the rough ride through time two characters had ended up inside the third one's shirt -- given their appearance after they stepped out of the time machine, they had ''assumed'' they'd been fused together.
-->'''Laverne:''' Great. Stuck here the rest of my life...listening to Bernard talking and watching Hoagie eat. Mom warned me there'd be days like this.
* UnusuallyUninterestingSight: The Moustached Tentacle doesn't seem the least bit impressed by a huge cherry tree ''vanishing right in front of him''. And he never mentions it again. [[JustifiedTrope Because it was]] [[TimeyWimeyBall never there to begin with.]]
* UnwinnableByDesign: Averted, as with the majority of Creator/LucasArts' adventure games.
* UselessItem: There's a hubcap late game, which is useless.
* VerbalTic: Laverne will sometimes [[LaughingMad giggle psychotically]] mid-sentence.
* VideoGameCrueltyPotential:
** Laverne can trap the cat inside the kennel by activating the barrier and will then mock the cat with an EvilLaugh. For fun, of course.
** Subverted when Laverne ''revives'' the frozen hamster in a 22th century microwave oven, while delivering a FantasticAesop. (She explains that in her century kids who microwave their hamsters are taken away and put up for adoption, so [[DontTryThisAtHome don't do it]].)
* VisualPun: The IRS ties up Dr. Fred in red tape. Literally. Of course, the pun is lost for foreign audiences. At least it is not the basis for a puzzle, not like some OTHER Lucas Arts games (**cough**monkey wrench in Monkey Island**cough**).
* WearingAFlagOnYourHead: Laverne infiltrates the tentacle-controlled future by wearing a tentacle-shaped Star-Spangled Banner.
** It oddly has a hole for her head to actually pass through a "sucker".
* WellIntentionedReplacement: Inverted: Dr. Fred used an imitation diamond in the time machine, which then fails and sets up the main conflict; Bernard must then acquire a real diamond so it'll function properly.
* WhatCouldPossiblyGoWrong:
--> '''Bernard''': Well, what possible harm could one insane, mutant tentacle do?\\
\\
'''Dr. Fred''': It works! I can't believe it! And they said imitation diamond wasn't good enough!\\
[Loud BANG! - the diamond crumbles]\\
'''Dr. Fred:''' [[OhCrap Uh-oh]]...
* WhatHappenedToTheMouse: Green Tentacle is last seen [[BoundAndGagged tied up]] and at the mercy of an army of Purple Tentacles.
** Makes you wonder why no option is given for the heroes to untie him...
* WhatsAnXLikeYouDoingInAYLikeThis: The tentacle guard to disguised Laverne, and... Hoagie to the talking horse.
* WhoWouldBeStupidEnough: Dr. Fred tells Laverne and Hoagie that he tied up Purple Tentacle in the basement. Lucky no-one's stupid enough to let him go..... (See NiceJobBreakingItHero.)
* WithFriendsLikeThese: Bernard considers Cousin Ted as his friend, despite Ted being an inanimate mummy. If the player tries to make Bernard harm Ted, he'll refuse by saying this is not the way to treat friends. Yet, [[spoiler:this doesn't prevent him from painting him red, throwing him brutally inside an attic with a rope, and using him like a dummy to pose as Dr. Fred]].
** You know what they say: it is the mark of true friendship to aid in your friend's wacky schemes to save the world. Ted simply can't refuse to help out, you know?
** They also say: "A friend will help you move house. A good friend will help you free a man from the clutches of the IRS by replacing him with a dead body."
* WorryingForTheWrongReason: Just before Bernard and his friends are sent to the past by Doctor Fred:
-->'''Bernard''': Have any people been hurt in this?
-->'''Dr. Fred''': Of ''course'' not! [''trio look relieved''] This is the first time I've ever tried it on ''people''! [''trio panic'']
* WritersBlock: The constitutionalists are in the middle of one, so they set a suggestion box.
* YouAndWhatArmy: At the end of the game, the heroes face down an entire ''army'' of Purple Tentacles that the future Purple Tentacle pulled from other parts of the timeline.
-->'''Bernard''': You and what army?
-->'''Purple Tentacle''': Why, ''this'' army, of course!
-->'''Laverne''': [[OhCrap ...yikes...]]
* YouCanTalk: Hoagie is surprised to discover that horses can talk. The horse explains that "maybe they never had anything to say to you."
* YouCantMakeAnOmelette: One character uses the equivalent, "If you want to save the world, you got to push a few old ladies down the stairs." ...[[{{Metaphorgotten}} having done just that]].
* YouGetWhatYouPayFor: In the beginning, the Chron-O-John fails because Dr. Fred used a synthetic diamond instead of a natural one.
* ZillionDollarBill: You manage to make the Edisons fabulously wealthy by obtaining [[RecursiveCanon the back royalties Lucasarts owes them]] for ''VideoGame/ManiacMansion''. Naturally, the money must immediately be spent to buy a giant diamond to repair your time machine.
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