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.

An alien and a robot land on Earth after World War II and tell mankind to be peaceful or face destruction.

Two years into an intergalactic invasion of Earth, survivors in Sydney, Australia, fight back in a desperate ground war. As casualties mount by the day, the resistance and their unexpected allies, uncover a plot that could see the war come to a decisive end. With the Alien invaders hell-bent on making earth their new home, the race is on to save mankind.

After returning from her first space mission, astronaut Sam Walker is placed under NASA’s care at a high security house for rehabilitation and medical testing. However, when disturbing occurrences begin happening around the property, she fears that something extraterrestrial has followed her back to Earth

Test space rockets exploding at liftoff and increased reporting of UFO sightings culminate in a direct attempt by alien survivors of a dead, extra-galactic civilization to invade Earth from impervious flying saucers, using ray-weapons of mass destruction.

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

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

When Earth astronaut Capt. Chuck Baker arrives on Planet 51 -- a world reminiscent of American suburbia circa 1950 -- he tries to avoid capture, recover his spaceship and make it home safely, all with the help of an empathetic little green being.