•Why it earns a slot
The War of the Worlds earns its place as the template for the alien-invasion genre, and for its pointed inversion of Victorian imperial confidence: the colonisers become the colonised, and humanity is saved not by heroism or technology but by microscopic life it had never thought to credit.
Martians launch a calculated invasion of southern England, deploying towering fighting-machines and devastating weapons that overwhelm all human resistance and send millions fleeing London in panic. The unnamed narrator survives weeks of hiding, chaos, and near-starvation while witnessing the collapse of Victorian civilization. The invaders are ultimately killed not by human ingenuity but by terrestrial bacteria against which they have no immunity.
This distillation is written from the freely available original, which is always the better read when you have the time: gutenberg.org.