Movies like Invaders from Mars

16-year-old Cassie Sullivan tries to survive in a world devastated by the waves of an alien invasion that has already decimated the population and knocked mankind back to the Stone Age.

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

Ba'al travels back in time and prevents the Stargate program from being started. SG-1 must somehow restore history.

A parasitic alien soul is injected into the body of Melanie Stryder. Instead of carrying out her race's mission of taking over the Earth, "Wanda" (as she comes to be called) forms a bond with her host and sets out to aid other free humans.

A boy haunted by visions of a parallel world aids its disillusioned guardian in preventing the destruction of the nexus of universes known as the Dark Tower.

Susan Ivanova discovers a derelict spaceship in hyperspace. They tow it back to Babylon 5, then strange things start happening. People are being telepathically taken over by aliens from another (third)space.

Londo Mollari, the Centauri Emperor, recounts the initial contact between the Humans and Minbari, which resulted in a major incident and subsequent war, for an eager pair of youngsters wanting a story about love and conflict.

Ray Ferrier is a divorced dockworker and less-than-perfect father. Soon after his ex-wife and her new husband drop off his teenage son and young daughter for a rare weekend visit, a strange and powerful lightning storm touches down.

Arizona ants mock the food chain on their way to a desert lab to get two scientists and a woman.

A deep sea submersible pilot revisits his past fears in the Mariana Trench, and accidentally unleashes the seventy foot ancestor of the Great White Shark believed to be extinct.

An extremely wealthy elderly man dying from cancer undergoes a radical medical procedure that transfers his consciousness to the body of a healthy young man but everything may not be as good as it seems when he starts to uncover the mystery of the body's origins and the secret organization that will kill to keep its secrets.

A small-town doctor learns that the population of his community is being replaced by emotionless alien duplicates.