"Dawn breaks on a new, pristine world. One with no biological fauna on it... only flora of many different shapes, sizes, colors and allergen-producers. No sounds emerge from the forests save the blowing of the wind... no chirps of crickets, no buzzing of flies, no nothing... for fauna of any sort has not yet arisen.
This is an Earth-like planet, with the same four seasons that we humans are used to. Gravity equal to Earth's exists, with the planet the right size for its part of the Habitable Zone. Winter, Spring, Summer and Fall come and go without being noticed by anyone, anything, or any plant. The sun rises in the east and sets in the west, same as Earth, and a single large moon shines overhead reflecting light from its sun back down onto the planet below.
Then, one fateful night...
WWWWHHHHHHOOOOOOMMMMMMMMM...
The clouds part, and a massive comet... nay, an asteroid, strikes through the planet's atmosphere. It defies the planet below commanding it to make way for itself, screaming across the sky and rending the heavens asunder. Micro-meteors and debris trail off as it crosses, some burning up in the atmosphere, some large enough to survive the trip to the planet's surface, and still others as large as boulders slamming to the ground with the force of hundreds of kilotons of TNT.
The asteroid breaks up into three huge chunks. The first chunk bounces off the atmosphere like a basketball being dribbled, spiraling off into space before slamming into the moon and making it appear that the moon's face has a sharp "nose" of dark, angular, different-styled stone than its regular composition. The second chunk explodes in the atmosphere, causing a sonic boom that flattens untold amounts of trees, splintering them like toothpicks. The third slams into the ocean, causing a tidal wave that reduces the nearby landscape to a washed-out beach and neatly scours the nearby forests and hills clean of all plant life.
This third chunk broke apart while sinking to the bottom, bubbling and hissing as the water cooled it after its roaring surge through the atmosphere. When it broke apart, a huge chunk of a strange lavender crystal stone was exposed.. While this chunk promptly sank to the bottom faster than the rest of the meteorite, at the same time it was also being intentionally "propelled" away by some unseen force.
The strange lavender crystal shattered, releasing its contents into the unsuspecting pristine waters of the planet's oceans.
Some strange advanced civilization had seeded the comet with a single fast-breeding bacterium they called X. Neutralis Thromalius. Colorless and measuring only an inch both long and wide (so it looked like a square), this bacteria had the potential to go on to be the sentient, sapient force for the planet and would shape the world to its whims and desires.
In order to bend reality to its whim, it just needed to survive the deepest oceans, first!
By the time it reaches the surface, the frozen wasteland left by the millions of cubic feet of dirt thrown up by the asteroid should be thawed.
While utter darkness in the bitter depths, bone chilling waters that freeze the bones within your skin, and crushing pressures capable of piercing the fabric of space and time are not really a sentient life form's best friends... Life Finds A Way. It always finds a way.
All right, folks. I want you, the redditors to "suggest" mutations of this colorless, translucent bacteria. As there are other bacteria in the ocean to prey upon and be preyed upon by, let's see if you survive. Suggestions for mutations can include anything from what it eats to what color it is to how it moves and defends itself. Be creative but try and keep it within the length of a single tweet. Nature likes to Keep It Simple.
Go ahead and leave your comments on this post as to how the microbe evolves, and we'll see what turns up. I want to see what you guys are capable of coming up with!
For the first week and a half, I will write a post once every day explaining which mutations made it. The top three upvoted mutations per post will be added to the microbe. I will then write about what our little bacteria does, as well as what its opponents do... and there WILL be other critters in the ocean to deal with!
Each post, for this first round, will equal about 100,000,000 years. When we hit 1 Billion Years, various paths will open up and evolution will slow down as you vote on said paths. At 2 Billion, more paths open and evolution all but stops; basic appearance and abilities will be "locked in" until we end at 3.5 Billion Years. then the next stage of the game will begin as you decide to Proceed Unto Land or Remain in The Deeps as an aquatic race. The discovery of religion and magic (and how to deal with both!) will come later.
Will the new race be steampunk? Natural-materials only? Medieval taken to the 21st century and onward? Ancient Egypt? A tale of a desert species living under the moon because the sun burns them all to death? Robots? Tree-root beings? An elemental race? Reptilian? Anthropomorphic?
That's for you guys to decide... and for me to find out!
That... is enough out of me, and I now turn it over to you. It's time to get this Civilization underway. Whether you read for the story or actively take part in guiding the civilization's hand, may you Enjoy Your Stay. Can you, the Collective Hivemind of the Internet, give rise to a Civilization starting from the primordial soup?
... ... ... Or will you be forever lost, condemned to the gene pool of history?
Let's... find... out.
Good luck, everyone."
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Current Civilization link (currently in worldbuilding phase):