Best movies like Robot Monster

As the Earth wrestles with its agonizing birth, the peoples of this barren and desolate world struggle to survive. Driven by animal instinct they compete against the harsh conditions, their giant predators, and warring tribes. When two people from opposing clans fall in love, existing conventions are shattered forever as each tribe struggles for supremacy and Man embarks on his tortuous voyage of civilization.

When the crew of an American tugboat boards an abandoned Russian research vessel, the alien life form aboard regards them as a virus which must be destroyed.

An ancient tribe attempts to sacrifice Sanna as an offering to the Sun god to save their tribe from dinosaurs. Tara, a young man from another tribe, saves Sanna and takes her along with him.

The inhabitants of Ganymede need to find mates from another world or they will become extinct. They soon discover a suitable breeding stock amongst the females of planet Earth.

An anemic alien comes to Earth from a dying planet, in the remake of the Corman 50s classic.

A portion of the tail of a prehistoric reptile is discovered in Denmark. It regenerates into the entire reptile, which proceeds to destroy buildings and property and generally make a nuisance of itself. It can fly, swim, and walk, and has impenetrable scales, which makes it difficult to kill.

After a wave of reports of mysterious attacks involving people and pets being eaten by the traditionally docile fruit, a special government task force is set up to investigate the violent fruit and put a stop to their murderous spree.

A refugee Soviet scientist arrives at a desert airport carrying secret documents, but is attacked by a pair of KGB assassins and escapes into the desert, where he comes in range of an American nuclear test and is transformed into a mindless killing beast.

After being driven to extinction, great bloodthirsty dinosaurs come back to life with the assistance of a demented genetic scientist. She plans to replace the human race with a super-race of dinosaurs who will not pollute the planet.

In a future Earth barren of all flora and fauna, the planet's ecosystems exist only in large pods attached to spacecraft. When word comes in that the pods are to be jettisoned into space and destroyed so that the spacecraft can be reused for commercial purposes, most of the crew of the Valley Forge rejoice at the prospect of going home. Not so for botanist Freeman Lowell who loves the forest and its creatures, so decides to take matters into his own hands to protect what he loves.

In the distant future, a federation marshal arrives at a research lab on a remote planet where a genetic experiment has gotten loose and begins feeding on the dwindling scientific group.

After Los Angeles is invaded by an army of subterranean monsters, a small group of people must fight for survival in the deserted metropolis.

Secretly engineered and blasted into space by government scientists, a vile monster crash-lands back on Earth and begins killing everyone it encounters. As the death toll rises, veteran cop McLemore bravely steps forward to crush the scary creature.

Corporate smuggling of South American killer bees into the United States results in huge swarms terrorizing the northern hemisphere. A small team of scientists work desperately to destroy the threat, but the bees soon mutate into a super-intelligent species that threatens the world.

Something is alive beneath the surface of the graveyard. Something with the power to destroy and the power to heal. One man, a cop, is determined to kill this mysterious creature. Another, a scientist, is determined to capture and save this miraculous being. Stalking the creature in it's subterranean habitat, neither man is aware of the battle they are about to start. A battle for science, survival and revenge.

A crew of scientists arrives on a far, cold planet to examine archaic artifacts of unknown origin. They discover that their German enemies already have a ship there. When they seek their help after a failed landing, they only find the Germans’ bodies, obviously slaughtered by one of the archaic creatures, awoken to new life. Now the alien is after them.

SIRIUS 6B, Year 2078. On a distant mining planet ravaged by a decade of war, scientists have created the perfect weapon: a blade-wielding, self-replicating race of killing devices known as Screamers designed for one purpose only -- to hunt down and destroy all enemy life forms.

Aliens have landed and are hiding on Earth, but need Earth’s scientists to help them fight an inter-planetary war.

An American airbase in Canada provokes resentment from the nearby residents after fallout from nuclear experiments at the base are blamed for a recent spate of disappearances. A captain from the airbase is assigned to investigate, and begins to suspect that an elderly British scientist who lives near the base and conducts research in the field of mind over matter knows more than he is letting on..

Two escaped convicts are found hiding in a rocketship built by a renegade inventor, who forces them to become the crew for a trip to the Moon. Also on board, as inadvertent stowaways, are his assistant and his secretary; and none of them are aware that the inventor is actually a Lunarian explorer sent to Earth by the dying Lunar civilization and the only remaining male member of that civilization.

Paul Dean has created a deadly parasite that is now attached to his stomach. He and his female companion, Patricia Welles, must find a way to destroy it while also trying to avoid Ricus, his rednecks, and an evil government agent named Merchant.

In the future, Earth is overcrowded and the population relies on distant bases to be fed. In the Saturn 3 station, Major Adam and the scientist Alex, who is also his lover and has never been on Earth, have been researching hydroponics for three years in the base alone with their dog Sally. Captain Benson arrives Saturn 3 with Hector, incapable to controlling his emotions he transfers his homicidal tendency and insanity to Hector. Now Major Adam and Alex are trapped in the station with a dangerous psychopath robot.

Experiments in biological warfare have destroyed all but a few remnants of the human race. Alone in a lab, eight students work feverishly to create a vaccine before they are forced outside in search for food. It is then that the surviving scientists discover creatures mutated by the plague. Now they prepare to do battle against their worst fear: The Terror Within.

In a world gone mad, the last human colony struggles to survive underground, beneath a land of nightmarish mutants who seek to destroy them. But when the mutant breaks inside humanity's final stronghold, the battle for survival pits the human colonists against their deadly invaders miles below the earth's surface.

In this loose remake of "Forbidden World" (1982), Commander Krieger and his robot companion Tinpan are summoned by a distress call to a research facility on the planet Phaebon, and soon find themselves battling a bizarre virus and a monstrous creature inadvertently created by the scientists there.

Aliens who've come to earth to spawn deep beneath the ocean begin terrorizing a Florida beach community. An ichthyologist and a young filmmaker team up to uncover the mystery of these monsters from the deep--before they strike again.

When an atomic war on Mars destroys the planet's women, it's up to Martian Princess Marcuzan and her right-hand man Dr. Nadir to travel to earth and kidnap women for new breeding stock. Landing in Puerto Rico, they shoot down a NASA space capsule manned by an android. With his electronic brain damaged, the android terrorizes the island while the Martians raid beaches and pool parties

American astronaut Frank Douglas mysteriously disappears from his spacecraft as it parachutes to Earth. He is apparently replaced by or turned into a large, radioactive, humanoid monster. A team of scientists and military men attempt to capture the monster.

A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists,into a plague ravaged alternate time-line whose war weary inhabitants are locked in a constant battle with killer robots from the future.

Returning from the planet Venus, an errant NASA spacecraft crashes into the ocean, spilling its radioactive cargo. Enveloped by a radioactive mass, a rabid weasel is transformed into a gigantic killer mutant. Prowling the countryside, the huge weasel kills and devours victims. The creature is captured by a disturbed scientist who plans to use its regenerative blood to amass an army of similar monsters, enabling him to conquer the Earth.

Detective Brighton investigates a series of unusually gruesome murders and is soon caught in a web of intrigue involving a mad scientist, a beautiful woman, a power mad politician, and one very ferocious monster. Their secret lies in a mysterious formula which could unlock the secrets of immortality... and on a less positive note, also cause the mass mutation of all life on earth! The bodies pile up as everyone scrambles for possession of the formula. It culminates in a climactic showdown whose outcome will determine the fate of all mankind!

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.

Astronauts land on a planet with prehistoric creatures and a war between a human-like tribe and a race of vampires.

A spaceship gets lost and is forced to make an emergency landing on an unknown planet. The planet looks much like Earth, only with no trace of civilization. Soon the crew discovers that there are bloodthirsty dinosaurs on the planet. The crew hopes to be found and rescued, but until then, they must fight to survive.

Monsters from space attack earth, two scientists and a couple of teenagers try to stop the extraterrestrial invaders.