Best movies like The Alien Within

Similar in 90%

Piranha (1995)

Plot Summary:

Doctor Baines has been conducting genetic experiments on piranhas and has made them virtually unstoppable. Unfortunately, his assistants, Maggie and Paul, accidentally release the hybrids into the Lost River Lake threatening to destroy everyone in their path. Can they prevent the flesh-eating piranhas from escaping into the ocean and spawning?.

Similar in 87%

Humanoids from the Deep (1996)

Plot Summary:

In this remake to the original 1980 ecological horror movie, a secret government experiment turns nightmarish when genetically altered fish, bred as amphibious weapons, escape. Scientists believe them dead after a biohazardous chemical spill. Far from it, the creatures thrive as bloodthirtsy killers, threatening to annihilate a small coastal town by slaughtering the men and abducting the women for mating! Government scientists attempt to keep the creatures' origin a secret while trying to destroy them.

Similar in 78%

Harbinger Down (2015)

Plot Summary:

A group of grad students have booked passage on the fishing trawler Harbinger to study the effects of global warming on a pod of Orcas in the Bering Sea. When the ship's crew dredges up a recently thawed piece of old Soviet space wreckage, things get downright deadly. It seems that the Russians experimented with tardigrades, tiny resilient animals able to withstand the extremes of space radiation. The creatures survived, but not without mutation. Now the crew is exposed to aggressively mutating organisms. And after being locked in ice for 3 decades, the creatures aren't about to give up the warmth of human companionship.

Similar in 80%

Species III (2004)

Plot Summary:

After she delivers her child in an ambulance, alien Eve is killed by a half-breed. Fortunately, Dr. Abbot scoops up the baby alien and escapes. In time, the baby grows into a gorgeous blonde named Sara and begins her quest to find a worthy mate. But Sara is also savage and leaves a trail of deaths in her wake. This carnage makes chemistry student Dean question whether to help her race or not.

Similar in 87%

Creature (1985)

Plot Summary:

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.

Similar in 77%

Humanoids from the Deep (1980)

Plot Summary:

They're not human. But they hunt human women. Not for killing. For mating.

Similar in 84%

Alien (1979)

Plot Summary:

During its return to the earth, commercial spaceship Nostromo intercepts a distress signal from a distant planet. When a three-member team of the crew discovers a chamber containing thousands of eggs on the planet, a creature inside one of the eggs attacks an explorer. The entire crew is unaware of the impending nightmare set to descend upon them when the alien parasite planted inside its unfortunate host is birthed.