[[caption-width-right:350:Carpeting a countryside in mortal terror!!]]
There once was a man named Vic Savage. You're probably thinking "So?" Well, he knew an {{Exploitation Film}}maker named Allan Silliphant (who would later direct ''The Stewardesses'', the most profitable 3D movie with respect to budget of all time) that was related to Stirling Silliphant (writer of ''Film/InTheHeatOfTheNight''). Vic bought a story from Allan, pretended he bought a story from Stirling, and pulled together some investors - supposedly by promising cameo roles. He took the money, made... a "movie," and disappeared with most of the investors' money.

The story is about an UFO that releases a giant caterpillar-like monster who begins eating random people. It turns out that [[spoiler: the monsters (there's a second one inside the ship) are actually robots sent to analyze human beings for aliens. Although the monsters are destroyed by the end, the spaceship still beams its collected data into space]]...

This "movie" would later be remembered as being particularly bad even for ''Series/MysteryScienceTheater3000''. For tropes and specifics relating to the ''[=MST3K=]'' version, please check the [[Recap/MysteryScienceTheater3000S06E06TheCreepingTerror episode recap page]].

!!This film provides examples of:
* {{Cameo}}: Most memorably obese investor #5 as Bobby's grandpa.
* CarFu: The second monster is defeated by ramming it with a truck! Armies of the world, take note: when guns are useless, grab a Ford!
* ClothingDamage: A blink-and-you-miss-it moment. When the monster attacks the dance party, a woman tries to escape, only for a guy to come after her and pull her away ''tearing her dress top off''.
* {{Corpsing}}: Dr. Bradford is laughing like crazy as the monster attempts to eat him.
* DoesThisRemindYouOfAnything: At one point, it looks like the Terror is ''humping'' a convertible.
* DullSurprise: "My God, what is it?"
* FauxlosophicNarration
* {{Fanservice}}: The various shots of wiggling female legs disappearing down the monster's gullet. May also count as FetishFuel for some. [[Series/MysteryScienceTheater3000 Servo]] speculated that the director had a vore fetish.
** FanDisservice: And for others, it's ruined by the fact that, well, they're getting eaten (and that it doesn't apply to the male victims).
* FunnyBackgroundEvent: The drunk at the party is seen still drinking at the bar while everyone is slowly trying to either leave or crawl into the monster's mouth.
* GainaxEnding: The second monster is killed, but the spaceship sends off a signal to ... somewhere ... and the threat that more monsters may come is raised, though there's some speculation by the film that the society from which it came is extinct now.
* GodzillaThreshold: The military is forced to use... ''a grenade''.
* HereWeGoAgain: The spaceship has a ''second'' creature in it.
* HollywoodTactics: Apparently infantry engagement rules in the 50's required soldiers to stand tightly clumped-together and fire at the enemy from ''seven feet away''. Col. Caldwell only thinks to use a grenade after his entire squad is eaten.
-->'''Servo:''' "What kind of memorial do we build to ''those'' guys?"
* HotScientist: The male variant. The film makes a big deal about how young and hot he is.
* ImprobableWeaponUser: The young folk singer weaponizes his acoustic guitar against the Terror. It works as well as you might expect.
* InfantImmortality: Averted with Bobby. Played straight with the actual baby.
* KillEmAll: This film has very few survivors.
* LeaveTheCameraRunning: A lot of long scenes of nothing going on, except dancing, or driving, or playing a guitar...
* MonsterMisogyny: One of the most blatant examples.
* TheNarrator: Who seems to only talk when the characters should be. The plan was originally to dub it over, similar to Manos, but they decided to use a Narrator instead.
* PregnancyTropes: Averted. There's just suddenly a baby.
* ShaggyDogStory
* ScienceIsBad: [[JerkAss Dr. Bradford]] is clearly wrong for taking any kind of non-military action. Not that the military are any better.
* SocietyMarchesOn: Of course, but it's amusing to see a car with "[[https://en.wikipedia.org/wiki/23_skidoo_(phrase) 23 Skidoo]]" (which was badly dated ''at the time of filming'') and other archaic jargon painted all over it.
* SoundtrackDissonance: Most of the scenes with the monster eating people are set to jazz music. Completely takes away from the scariness of the situation.
* SwallowedWhole: How just about everyone gets it, though the men go down fast while the [[MonsterMisogyny women go down struggling, wriggling, and screaming all the way.]]
* TokenRomance: During the party, one character is stewing about her boyfriend standing her up, then a pair of guys duke it up (presumably over her) while the monster rampages. [[BigLippedAlligatorMoment This subplot is suddenly introduced and vanishes just as quickly.]]
* TooDumbToLive: Almost all of the victims tend to stand in place and scream rather than flee the easily outrunable creature, except the ones in cars. [[UpToEleven They just kind of sit there and scream, even though they could outspeed the monster by walking away casually]]. The monster design pretty much makes it impossible to eat anyone without their willing assistance.
-->'''[[Series/MysteryScienceTheater3000 Mike]]:''' Now, if you can help out by climbing ''in''... ''(the bots chortle)''
* WhatHappenedToTheMouse: The first victim's boyfriend is never seen nor heard from again after he runs off and leaves her to her fate. Apparently, he didn't think it worth telling anyone about the monster.