Movies like Hydrocosmos (2021)
The best movies like Hydrocosmos (2021) are The Mouse That Roared (1959), When Worlds Collide (1951) and Signal One (2026). If Hydrocosmos hooked you, these 20 similar films are what to watch next, and every pick says why it matches.
Quick picks
- Highest ratedInvader Zim: Enter the Florpus (2019)7.4/10 from 265 votes
- NewestSimpsley (2026)Released 2026
The Mouse That Roared (1959)
The Duchy of Grand Fenwick decides that the only way to get out of their economic woes is to declare war on the United States, lose and accept foreign aid. They send an invasion force (in chain mail, armed with bows and arrows) to New York and they arrive during a nuclear drill that has cleared the streets.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisWhen Worlds Collide (1951)
When a group of astronomers calculate a star is on a course to slam into Earth, a few days before, it's accompanying planet will first pass close enough to the Earth to cause havoc on land and sea. They set about building a rocket so a few selected individuals can escape to the planet.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisSignal One (2026)
A computer scientist is invited by a tech billionaire to join his private facility on a Caribbean island to investigate extraterrestrial matter on Earth. When they make contact beyond our world, chaos erupts as we’re left to wonder: do they come in peace?
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisPlanet 51 (2009)
When Earth astronaut Capt. Chuck Baker arrives on Planet 51 -- a world reminiscent of American suburbia circa 1950 -- he tries to avoid capture, recover his spaceship and make it home safely, all with the help of an empathetic little green being.
Why it matches: Recommended by TMDB viewers
SnoozefestMovies like thisDon't Look Up (2021)
Two astronomers go on a media tour to warn humankind of a planet-killing comet hurtling toward Earth. The response from a distracted world: Meh.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisNight of the Comet (1984)
After a comet wipes out most of life on Earth, two Valley Girls find themselves fighting against cannibal zombies and a sinister group of scientists.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisStar Kid (1997)
Shy seventh-grader Spencer Griffith's life changes when the meteor falls into local junkyard and he finds a Cybersuit - the wise and strong robot from another galaxy. Spencer puts Cybersuit on and becomes a different kind of guy
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisAsteroid: Final Impact (2015)
A deadly meteor storm has been labeled a one-time celestial occurrence, but astrophysicist Steve Thomas believes something worse is yet to come. After discovering his asteroid tracking satellite is secretly being used for military surveillance, Steve leaks the truth to the press, and it costs him his reputation, his job, and his friends. With the backlash of being a whistle-blower, the pressure threatens to tear his family apart, just when Steve discovers a threat to the entire planet: a giant dark asteroid invisible to current detection systems will soon strike the Earth. Barred from using his own satellite to prove the asteroid's existence, Steve is forced to work in the shadows in a desperate attempt to save humanity.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisLifeforce (1985)
A race of space vampires arrives in London and infects the populace, commencing an apocalyptic descent into chaos.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisDinosaur (2000)
An orphaned dinosaur raised by lemurs joins an arduous trek to a sancturary after a meteorite shower destroys his family home.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisAsteroid City (2023)
In an American desert town circa 1955, the itinerary of a Junior Stargazer/Space Cadet convention is spectacularly disrupted by world-changing events.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisMaximum Overdrive (1986)
When a comet passes close to the earth, machines all over the world come alive and go on homicidal rampages. A group of people at a desolate truck stop are held hostage by a gang of murderous 18-wheelers. The frightened people set out to defeat the killer machines…Or be killed by them.
Why it matches: Recommended by TMDB viewers
SnoozefestMovies like thisThe Arrival (1996)
Zane Ziminski is an astrophysicist who receives a message that seems to have extraterrestrial origins. Eerily soon after his discovery, Zane is fired. He then embarks on a search to determine the origins of the transmission that leads him into a Hitchcockian labyrinth of paranoia and intrigue.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisSimpsley (2026)
When penniless con-artist Marge Bouvier is sent to Italy to convince wealthy sap Seymour Skinner to come home, she's tempted by the trappings of his affluent lifestyle. But there’s a big fat fly in the ointment: Skinner's clingy, dim-witted mooch of a houseguest, Homer Simpsley. Lies, lust and Italian lira are abound.
Why it matches: Recommended by TMDB viewers
Absolute CinemaMovies like thisInvader Zim: Enter the Florpus (2019)
ZIM discovers his almighty leaders never had any intention of coming to Earth and he loses confidence in himself for the first time in his life, which is the big break his human nemesis, Dib has been waiting for.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisGreenland (2020)
John Garrity, his estranged wife and their young son embark on a perilous journey to find sanctuary as a planet-killing comet hurtles toward Earth. Amid terrifying accounts of cities getting levelled, the Garritys experience the best and worst in humanity. As the countdown to the global apocalypse approaches zero, their incredible trek culminates in a desperate and last-minute flight to a possible safe haven.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisAccident Man (2018)
Mike Fallon, the Accident Man, is a stone cold killer. When a loved one is murdered by his own crew, Fallon is forced to avenge the one person who actually meant something to him.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisCoherence (2014)
Four couples gather for dinner the night a mysterious and powerful comet passes overhead.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisAttack on Titan (2022)
As viable water is depleted on Earth, a mission is sent to Saturn's moon Titan to retrieve sustainable H2O reserves from its alien inhabitants. But just as the humans acquire the precious resource, they are attacked by Titan rebels, who don't trust that the Earthlings will leave in peace.
Why it matches: Recommended by TMDB viewers
SnoozefestMovies like thisSpaceballs (1987)
When the nefarious Dark Helmet hatches a plan to snatch Princess Vespa and steal her planet's air, space-bum-for-hire Lone Starr and his clueless sidekick fly to the rescue. Along the way, they meet Yogurt, who puts Lone Starr wise to the power of "The Schwartz." Can he master it in time to save the day?
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like this
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Frequently asked questions
What are the best movies like Hydrocosmos?
The closest matches to Hydrocosmos are The Mouse That Roared (1959), When Worlds Collide (1951) and Signal One (2026). Below are 17 more, each with the reason it matches.
What should I watch after Hydrocosmos?
Start with The Mouse That Roared (1959), the closest match to Hydrocosmos.
What is the highest-rated movie like Hydrocosmos?
Invader Zim: Enter the Florpus (2019), rated 7.4/10 by 265 TMDB users.
What is the newest movie like Hydrocosmos?
Simpsley (2026) is the most recent release on this list.
Are there English movies like Hydrocosmos?
Yes: The Mouse That Roared (1959), When Worlds Collide (1951) and Signal One (2026).
How are movies similar to Hydrocosmos chosen?
First come films that Trakt’s viewers watch alongside Hydrocosmos, then TMDB’s recommendations and films it rates as similar in story and genre. Each pick says which signal put it there.