Free-living, quickly-reproducing, sunlight-eating cells rapidly become one of the most successful lifeforms on the planet. They invade every niche, and are responsible for one of the first non-physics-driven forms of climate change: they reduce the carbon dioxide in the atmosphere hugely, and cause the extinction of many oxygen-intolerant early forms of life.
They are first clearly present around 2.5 billion years ago, and survive to the present day in great quantities in many locations, from the blue-green algae which blooms on the Mediterranean to the camouflaging bacteria which turns sloths fur dark green.
That's as far as you can evolve here!
You can go back to the start with the link above, or share what you became with the icons below.
Evolution starts with the Last Universal Ancestor.
You can find out what happened before evolution here.
You can also short-cut to Land plants, or Animals
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