The Quatermass Xperiment

In England, a group of space scientists led by Bernard Quatermass, who have developed plans for the first Moon colony, learn that a secret, ostensibly government-run, complex of identical design has been built in a remote part of England and is the focus of periodic falls of small, hollow "meteorites" originating in outer space. Quatermass determines to investigate and uncovers a terrifying extraterrestrial life form which has already begun action to take over the Earth.

The first manned expedition to Mars is invaded by an unknown life form, which stows away on the rescue ship.

The first pilot to leave Earth's atmosphere lands, then vanishes; but something with a craving for blood prowls the countryside...

When the first manned flight to Venus returns to Earth, the rocket crash-lands in the Mediterranean near a small Italian fishing village. The locals manage to save one of the astronauts Colonel Calder, the mission commander. A young boy also recovers what turns out to be a specimen of an alien creature. Growing at a fantastic rate, it manages to escape and eventually threatens the city of Rome.

In Arborville, California, three high school students try to protect their hometown from a gelatinous alien life form that engulfs everything it touches.

As a result of nuclear testing, gigantic, ferocious mutant ants appear in the American desert southwest, and a father-daughter team of entomologists join forces with the state police officer who first discovers their existence, an FBI agent and, eventually, the US Army to eradicate the menace, before it spreads across the continent — and the world.

Author and amateur astronomer John Putnam and schoolteacher Ellen Fields witness an enormous meteorite come down near a small town in Arizona. Putnam becomes a local object of scorn when, after examining the object up close, he announces that it is a spacecraft, and that it is inhabited...

A mysterious artifact unearthed below a London Underground station proves to have powerful psychic effects on the people around.

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.

A glowing brain-like creature arrives on a beach near a rocket test site via a teleportation beam. The alien communicates telepathically with the children of scientists. The kids start doing the alien's bidding as the adults try to find out what's happening to their unruly offspring.

While scavenging the deep ends of a derelict space station, a group of young space colonizers come face to face with the most terrifying life form in the universe.

The crew of the colony ship Covenant, bound for a remote planet on the far side of the galaxy, discovers what they think is an uncharted paradise but is actually a dark, dangerous world.

Dr. Frankenstein and his monster both turn out to be alive after being attacked by an angry mob. The now-chastened scientist attempts to escape his past, but a former mentor forces him to assist with the creation of a new creature.

A small island community is overrun with creeping, blobbish, tentacled monsters which liquefy and digest the bones from living creatures. The community struggles to fight back.

When Seth Brundle makes a huge scientific and technological breakthrough in teleportation, he decides to test it on himself. Unbeknownst to him, a common housefly manages to get inside the device and the two become one.