All concepts 
Narrative · Conflict type

Person vs Alien

The existential conflict between humanity and extraterrestrial life, serving as a narrative metaphor for colonialism, xenophobia, and human limitations before the unknown.

The terror of the unknown made manifest, a struggle for survival against an utterly alien intelligence. It's the chilling realization of humanity's insignificance in a vast, indifferent cosmos, amplified by the visceral fear of invasion and the fight for our very existence.

Books

Ender's GameOrson Scott Card
The Left Hand of DarknessUrsula K. Le Guin
Rendezvous with RamaArthur C. Clarke
SolarisStanislaw Lem
RingworldLarry Niven
DreamcatcherStephen King
Childhood's EndArthur C. Clarke
Starship TroopersRobert A. Heinlein
The Forever WarJoe Haldeman
Old Man's WarJohn Scalzi
Speaker for the DeadOrson Scott Card
The Naked SunIsaac Asimov
BlindsightPeter Watts
XenocideOrson Scott Card
Caliban's WarJames S. A. Corey
The Mote in God's EyeJerry Pournelle
Ender's ShadowOrson Scott Card
DawnOctavia E. Butler
GatewayFrederik Pohl
BintiNnedi Okorafor
Revelation SpaceAlastair Reynolds
To Sleep in a Sea of StarsChristopher Paolini
Babylon's AshesJames S. A. Corey
The SparrowMary Doria Russell
ExcessionIain M. Banks
Babel-17Samuel R. Delany
Children of the MindOrson Scott Card
The Space MerchantsC. M. Kornbluth
ArmadaErnest Cline
Abaddon's GateJames S. A. Corey
AuthorityJeff VanderMeer
Tiamat's WrathJames S. A. Corey
The Last ColonyJohn Scalzi
SpinRobert Charles Wilson
PerelandraC. S. Lewis
IlluminaeAmie Kaufman
Double StarRobert A. Heinlein
Leviathan FallsJames S. A. Corey
Mickey7Edward Ashton
The HumansMatt Haig
Zoe's TaleJohn Scalzi
Aurora RisingAmie Kaufman
Blue MarsKim Stanley Robinson
Adulthood RitesOctavia E. Butler
Shadow of the GiantOrson Scott Card
Cibola BurnJames S. A. Corey
Axiom's EndLindsay Ellis
EchopraxiaPeter Watts
FootfallJerry Pournelle

Related

First ContactPerson vs MachinePerson vs SupernaturalCosmic DreadSlumbering AncientPerson vs GodSurvival vs MoralityHuman vs Post-HumanThe Double / Mirror SelfPerson vs Nature