Stargate Downfall of Earth Various AUs
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Listing Series
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Evacuation Earth by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
01 Dec 2025
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Summary
When an unknown alien species launches an attack across the planet, the SGC stands alone as the National Power grid goes dark leaving the entire planet in the dark. Abandoned and awaiting certain death, an unexpected voice reaches out across galaxies that brings hope to the survivors taking refuge at the mountain.
Series
- Part 1 of Stargate Downfall of Earth Various AUs
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Replicators Attack by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
02 Dec 2025
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Summary
When Earth is lost in the battle with the replicators, a rogue plan created by Colonel Caldwell ends up being the only hope for the survivors of humanity.
Series
- Part 2 of Stargate Downfall of Earth Various AUs
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Declassification Goes Wrong by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
02 Dec 2025
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Summary
The Stargate Program has been declassified, and the population of Earth reacts as humans do, with fear and destruction. Chaos has taken over the Earth and the members of the SGC struggle to survive against incoming attacks and threats form their own people.
Series
- Part 3 of Stargate Downfall of Earth Various AUs
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Stockpile by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
03 Dec 2025
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Summary
Stockpile. Stockpiling is what occurs when a military force is left to their own devices without follow-on orders or guidance.
Atlantis Military personnel have been left alone onboard the city as they sit in the San Francisco Bay awaiting for guidance from the SGC and IOA about what their next steps will be. But when military members are left to their own devices without any of the civilians there to stop them they do as any military member would do while trapped in port. They start ordering supplies and making contingency plans.
Series
- Part 4 of Stargate Downfall of Earth Various AUs
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Downfall Earth by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
06 Dec 2025
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Summary
The Ori launched an attack on planet Earth and brought the planet to destruction. 38 minutes to evacuate and a packet of random survivors spread out across the planet are all that's left of the planet's population.
Series
- Part 5 of Stargate Downfall of Earth Various AUs
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Outbreak Earth by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
05 Dec 2025
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Summary
Zombies. An unknown infection has caused an unknown outbreak across the planet causing infected people to transform into a Zombie.
It's the Walking Dead in Stargate.
Series
- Part 6 of Stargate Downfall of Earth Various AUs
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Quarantine Earth by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
07 Dec 2025
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Summary
An unknown infection is creeping it's way across the globe, killing anyone who breathes it in. Although those with the ATA gene seem capable of withstanding the contagion for a time, but once a person starts to show symptoms, they die.
Series
- Part 7 of Stargate Downfall of Earth Various AUs
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Contagion Unleashed by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
09 Dec 2025
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Summary
Atlantis had been sitting in the San Francisco Bay for several weeks when it happened. Scientists clearing newly discovered laboratories on the northern pier accidently unleashed, a contagion, one that was so deadly that it made everything that had come before appear like the common cold.
The lab belonged to an ancient scientist called Iohannis who had continued to work in secret on the plague that had driven them away from Terra. Although unknown at the time his alterations to the virus genome made it spreadable not only those who carried the ATA gene but to any variation of the human evolution.
Series
- Part 8 of Stargate Downfall of Earth Various AUs
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A Rising Disclosure by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
16 Jan 2026
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Summary
General O’Neill begins his command of the SGC with unwelcome news from Doctor Elizabeth Weir and the President, the program was going to be declassified and eventually would be shut down if the public reacted badly to its revelation.
Jack of course, decided that he wasn’t going to take that news sitting down.
Series
- Part 9 of Stargate Downfall of Earth Various AUs
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Lockdown by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
22 Jan 2026
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Summary
The residents of Atlantis wake up to the quarantine alarm blaring throughout the city, there's no way out and the atmosphere outside the city contains a dangerous pathogen that threatens to kill every human alive on the planet. It's a race against time to track down and rescue the survivors before they must leave the planet itself.
Series
- Part 10 of Stargate Downfall of Earth Various AUs
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Broken Arrow by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
26 Jan 2026
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Summary
An off-shoot of the Trust has rebranded themselves as the Anti-Alien Alliance and has taken the hard stance that all alien devices on earth must be destroyed. After the theft of nuclear devices across the world, the planet ends up having to deal with random attacks across the globe. Who will survive? And will you die remaining behind in a fight to stop the alliance from detonating even more devices around the earth.
Series
- Part 11 of Stargate Downfall of Earth Various AUs
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Invasion by adrestia_of_the_long_night
Fandoms: Stargate SG-1, Stargate Atlantis, Stargate - All Media Types
30 Jan 2026
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Summary
Colonel Caldwell and Lieutenant Colonel Sheppard are in San Francisco in order to to meet a newly recruited scientist for the Stargate program and are to transport them to the SGC in Colorado. An unforeseen attack by an invading alien species called the Cor-Rath brings their plans to a staggering halt. Will they manage to evade capture and contact the Daedalus for evacuation? Will they manage to reunite with Atlantis?
Series
- Part 12 of Stargate Downfall of Earth Various AUs