self-replicating machine theme

There is a device of some sort that is able to create perfect copies of itself ad infinitum. Note: This is used for machines large enough to be seen; there is another theme for self-replicating nanodevices.

7 total · 1 major · 6 minor

StoryLevelMotivation
movie: Screamers (1995) major The titular Screamers are self-replicating, blade-wielding, burrowing robots that while originally built to kill enemy combatants, went about trying to kill everybody after having acquired sentience.
blackmirror3x06 minor The mechanical bees were able to form swarms and somehow reproduce themselves.
ds95x26 minor self-replicating mines were deployed around the wormhole to prevent Jem'Hadar convoy from entering Alpha Quadrant
ds96x01 minor self-replicating mines were deployed around the wormhole to prevent Jem'Hadar convoy from entering
ds96x04 minor self-replicating mine field deployed around wormhole
ds96x05 minor Dukat was working to remove self-replicating mines from around wormhole
movie: Stargate: The Ark of Truth (2008) minor Spider-like replicator bots got loose on the Odyssey battlecruiser and went about disassembling the ship to make copies of themselves.