Apocalypse Trio

With the world predicted to end this weekend, I figured one good apocalypse deserved another--or maybe three.  Using Chaotic Shiny's Apocalypse Generator to get the world destroying juices flowing, this is what I came up with:

“And The Sea Shall Give Up Her Dead”
Initial Cause: ancient evil unearthed and oceans rise
Threats: fast zombies, sea monsters, and slow zombies
Atlantis rises...from the dead! Hordes of zombies crawl out of the ocean depths to invade the land. These are probably under the command of an oceanically imprisoned creature--the alien god of Atlantis.  This could be turned into a post-apocalyptic by turning the clock ahead a bit to Waterworld-esque future.

“Red Tooth and Claw Dawn”
Initial Cause: pollution
Secondary Cause: communists
Threats: mutated animals, fanatics, communists
Combine the ecological horror of Prophecy (1979), and the Russian invasion of Red Dawn to get a world where mutated giant bears and Soviet aggressors threaten to make freedom-loving Americans an endangered species.

"Blood Red Planet"
Initial Cause: alien invasion
Secondary Cause: biological warfare
Threats: aliens, vampire, and mutated animals
Let’s take Atlas Comics' Planet of Vampires (which is sort of Omega Man meets Planet of the Apes) and combine in with War of the Worlds (why not? Apeslayer already combined POTA with War of the Worlds. I say vampires can go anywhere apes can). Let’s say some bioweapon used by the Martian invaders turned large numbers of people into bio-vampires. In a future world, overrun by Martians and their vampire lackeys, humans are hunted for sport.