Best movies like The Mysterians

The spaceship AAB-Gamma is dispatched from FAFC headquarters in Japan to make a landing on the planet Mars and investigate reports of UFOs in the area. As they near the red planet, they encounter a mysterious UFO that coats the ship's hull with unusual spores. Taking one of the specimens back to earth, it soon develops and grows into a giant chicken-lizard-alien monster that tramples Japan.

A misguided scientist enables an alien from Venus named Zontar to come to earth in order to "help solve man's problems". However, as soon as Zontar arrives on Earth, it quickly becomes obvious that the three-eyed, bat-winged, skeletal black creature has a hidden agenda.

A groups of astronauts crash-land on Venus and find themselves on the wrong side of a group of Venusian women when they kill a monster that is worshipped by them.

In 2020, after the colonization of the moon, the spaceships Vega, Sirius and Capella are launched from Lunar Station 7. They are to explore Venus under the command of Professor Hartman, but an asteroid collides and explodes Capella. The leader ship Vega stays orbiting and sends the astronauts Kern and Sherman with the robot John to the surface of Venus, but they have problems with communication with Dr. Marsha Evans in Vega. The Sirius lands in Venus and Commander Brendan Lockhart, Andre Ferneau and Hans Walter explore the planet and are attacked by prehistoric animals. They use a vehicle to seek Kern and Sherman while collecting samples from the planet. Meanwhile John helps the two cosmonauts to survive in the hostile land.

The year is 1988, and in the midst of recovering from a near-miss with a large comet, Earth finds that there are much worse matters at hand: the sudden arrival of a strange army of aliens and their fleet of unstoppable warships.

It is the near future, in the 100th year of Showa (year 2025). The population of world is more than 10 billion, and a world-class space development project called "Mars Terraforming Project" is in process. One day, a spaceship "Izanami" crashes in Japan on the way from Mars, and it revives the monster Negadon, which was captured by the spaceship. Can the human race knock down the monster !? Under the desperate situation, a middle age man Ryuichi Narasaki rises up against the monster. He is a robotics expert who lost his daughter in an accident during his experiments. Now, the desperate struggle between Narasaki and Negadon begins!!

A mission to Venus discovers the planet inhabited only by women led by their evil Queen Yllana. Yllana had all the men of Venus killed, now that's she met Earth men, she wants them dead, too.

Scientists investigate a huge meteor that crashes into the ocean off Mexico, and encounter a skyscraper-tall, mobile machine which is designed to syphon energy from earth, including any energy directed at it in an effort to destroy it.

Near a small English village, a scientific team is conducting experiments with magnetic fields, the results of which may have military applications but the intensification of which seem to be connected to UFO reports, a series of murders, an enormous insect egg, and a strange visitor with exceptional scientific knowledge.

Eight people at a remote Scottish inn find themselves confronted by a woman from Mars, who has landed her flying saucer for repairs but intends to soon conquer the Earth and enslave its men for breeding purposes.

When a new threat capable of destroying the entire planet emerges, Optimus Prime and the Autobots must team up with a powerful faction known as the Maximals. With the fate of humanity hanging in the balance, humans Noah and Elena will do whatever it takes to help the Transformers as they engage in the ultimate battle to save Earth.

Astronauts Glenn and Fuji investigate Planet X and encounter mysterious aliens known as the Xiliens, who ask Earth's people to help save their world from "Monster Zero". In exchange for borrowing Godzilla and Rodan, the Xiliens offer a cure for cancer. As Glenn investigates, he develops a romance with Miss Namikawa and uncovers the Xilien's true intentions.

At the turn of the century, all of the Earth's monsters have been rounded up and kept safely on Monsterland. Chaos erupts when a race of she-aliens known as the Kilaaks unleash the monsters across the world.

Inept beings from the planet Kabijj land on Earth and attempt to behead all of its beings and take over the planet

An evil brain from outer space unleashes monsters with deadly diseases on Earth with trying to conquer the universe. Superhero Starman must battle them all to save his planet.

A submarine expedition to salvage the remains of Mechagodzilla is thwarted by a massive dinosaur named Titanosaurus. An Interpol investigation leads biologist Ichinose to uncover the work of Dr. Mafune and his mysterious daughter Katsura. Aligned with the Black Hole Aliens, Katsura's life becomes entwined with the resurrected machine.

A mysterious extraterrestrial being resembling Godzilla rapidly approaches Earth. The monster, dubbed SpaceGodzilla, lands to challenge the King of the Monsters.

A desperate group of refugees attempts to recolonize Earth 20,000 years after Godzilla took over. But one young man wants revenge above all else.

Humanity's desperate battle to reclaim the Earth from Godzilla continues. The key to defeating the King of the Monsters may be Mechagodzilla, a robotic weapon thought to have been lost nearly 20,000 years ago.

Lord Doom, evil master of Proyas, the Dark Planet, sends Kraa the Sea Monster to Earth as part of his plan to dominate the galaxy. To keep the meddling hands of the Planet Patrol out of his scheme, he incapacitates their nearby space station. Fortunately, the alien agent Mogyar is on hand to land on Earth to stop the giant sea-beast. Accidentally landing in New Jersey rather than Italy (where scientists could have helped Mogyar build a weapon to stop Kraa), Mogyar must overcome his stereotypical Italian accent and strange appearance in order to ally with nearby humans to save the day.

A representative of an alien race that went through drastic evolution to survive its own climate change, Klaatu comes to Earth to assess whether humanity can prevent the environmental damage they have inflicted on their own planet. When barred from speaking to the United Nations, he decides humankind shall be exterminated so the planet can survive.

While watching for a planet that may collide with earth, scientists stationed in Scotland are approached by a visitor from outer space.

A young alien falls for a pretty teenage Earth girl and they team up to try to stop the plans of his invading cohorts, who intend to use Earth as a food-breeding ground for giant lobsters from their planet.

With no means for defeating Godzilla Earth, mankind watches as King Ghidorah, clad in a golden light, descends on the planet. The heavens and earth shake once again as the war moves to a higher dimension in this boring finale, that feels like three hours long

Giant robots from Venus invade Chicago. Stranded in the deserted city are Frank and Nora (who has recently attempted suicide). They meet a celebrating couple at a café, Vicki Harris and Jim Wilson. The quartet escape the robot patrol and take refuge in a large hotel. There, they encounter a new danger in Davis, a psychopathic killer.

A giant asteroid is heading toward Earth so some astronauts disembark from a nearby space station to blow it up. The mission is successful, and they return to the station unknowingly bringing back a gooey green substance that mutates into one-eyed tentacled monsters that feed off electricity. Soon the station is crawling with them, and people are being zapped left and right!

As a massive alien craft heads to Earth to do evil, three good and powerful superwomen befriend a young boy who has a special connection to Gamera. The alien Zanon launches a battery of familiar foes against Gamera, who might have to give the ultimate sacrifice to defeat the alien invader.

A crack test pilot lands to find the planet has been devastated by unknown forces. There are a few survivors, so he organizes them in a plan to ward off control by a group of killer robots.

In the year Universal Century 0079, humans have colonized the area of space lying in between the Earth and the moon. However, the ambitious Zabi family, rulers of the Duchy of Zeon, the grouping of colonies furthest from the earth, has sparked a war.

In the year 2050, mankind is extinct. The last survivors travel back in time to stop the invader, Killgis, aided by roboticist Kenichiro Kurenai. When they arrive at the past, they start to build a giant robot, Red Baron, and the pilot of the Red Baron races against time aided by reinforced humans to identify the alien in a fierce battle which starts in Tokyo for the survival of Earth. This is a re-imagining of the 1970s TV series' "Silver Kamen" and "Super Robot Red Baron".

An Earth Defence Brigade is formed to protect the world against invaders from outer space. The ruthless Frang Gang begins its raid against the earth on land, sea and by air. But they meet their match in the super robots of the Earth Defence Brigade.

Codename: Robotech is an animated pilot that preceded the original 1985 Robotech television series. It is set within the events of the First Robotech War.

The superhero Starman is sent by the Emerald Planet to protect Earth from belligerent aliens from the Sapphire Galaxy. The Sapphireans (or "Spherions") kidnap Dr. Yamanaka and force him to use his spaceship against the Earth.

In the year 2044 AD, the human race has amped-up its space exploration and reached out to the stars through the miracle of ROBOTECHNOLOGY, but not without bringing intergalactic war upon the Earth itself. Heroes will die and allegiances will shift. But in the midst of combat, perhaps peace will spring up through the charred remains of battered history. One of the greatest science fiction sagas of all time continues...

After a UFO sighting, a mysterious phantom in a bizarre outfit starts attacking people in San Fernando Valley.