fungus proliferating over the entire world theme

A fungus overruns the world and everybody dies.

Examples

The Cave of the Dead contained a fast growing fungus that, if ever ever got outside of the cave, would destroy the entire world in The Unknown Terror (1957).

2 total · 2 major

StoryLevelMotivation
movie: Space Master X7 (1958) major A mysterious fungus of extraterrestrial origin, when accidentally mixed with human blood, transforms into an ever-growing pile of space rust that will eventually cover the entire surface of the Earth. This happened on Mars, which explains the planet's red color.
movie: The Unknown Terror (1957) major A fungus overruns the world and everybody dies.