attack from outer space by a powerful conquering enemy theme

also known as: attack from outer space by a powerful subjugating enemy

Alien beings from outer space come along and subjugate your civlization to make it serve their own ends.

Examples

The mirror universe Halkan homeworld was under threat of being conquered or destroyed by the savage Terran Empire in tos2x10 "Mirror, Mirror".

103 total · 7 choice · 78 major · 18 minor

StoryLevelMotivation
bbf2x20 choice The Centauri conquered and enslaved Narn.
ent2x26 choice A devastating attack is leveled against Earth by a space probe sent by the Xindi.
movie: Mars Attacks (1996) choice Martians descended on Earth in a formidable armada of flying saucers and ultimately launched a full-scale assault on the planet's nations.
movie: Spaced Invaders (1990) choice The incompetent crew of a small spaceship from the Martian "Civilian Asteroid Patrol" mistook a Halloween rebroadcast of Orson Welles' 1938 The War of the Worlds radio dramatization for a real invasion. The rest of the story follows the Martians' inept attempt to take over the Earth.
tng3x26 choice Borg :: The Borg launched an invasion of Earth.
tng4x01 choice Borg :: The Borg launched an invasion of Earth.
tz1959e3x24 choice We saw a peculiarly insidious scheme for inspiring mankind's trust by giving us technology, only to gradually harvest us as food (Chambers' final words were that we all had his fate to look forwards to).
bbf2x22 major the Centauri conquered and enslaved Narn.
ent2x23 major Borg drones were sent to Earth over a century ago to conquer it and enslave the Human race, but ended up getting frozen in Arctic ice. Archer thought another invasion was coming in the future.
futurama2x17 major Richard Nixon's head conquered the home world of a race of pink, sentient, ball-like creatures.