Two college professors team up with a fire-fighting cadet and a government scientist to combat an alien organism that has been rapidly evolving since its arrival on Earth inside a meteor.
Aliens who look like clowns come from outer space and terrorize a small town.
Aliens with conical crania crash-land on Earth.
Four men who form a neighborhood watch group as a way to get out of their day-to-day family routines find themselves defending the Earth from an alien invasion.
When an occupying alien species' bureaucratic rule and advanced technology leaves most of Earth impoverished and unemployed, two teenagers hatch a risky plan to ensure their families' futures.
Earth is invaded by Martians with unbeatable weapons and a cruel sense of humor.
