(Inspired by ZombieTophs, Corrupted Family story)
An alien force of unknown origin has invaded earth and has set its sights on world domination...and/or turning the world into an everlasting orgy. The alien species known as, Tentacle's, takes any life form around it and rapes and mutates it, making them into slutty sex machines that only have sex on the brain.
There are hundreds of possible mutations that could occur, from multiple breast, to multiple cocks, from becoming an anthro or neko animal, to gaining tails, or all of the above, the Tentacles capacity for mutating life is limitless. Humans, animal, even plants, are not safe from these invaders as the try to corrupt all life on earth. Who are you? Have you been corrupted yet, or are you still sane? When is it that we start this journey?