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31 days of simulated evolution: full recap

Back in May, I asked a simple question: what happens if you place a few primitive organisms on a brand new planet, switch on random mutations, and let evolution run… for an entire month?

To find out, I launched a 31-day Twitch livestream using The Sapling. Starting with just a basic alga and an aquatic animal, we watched as life on planet Wright-1b unfolded in real time. Every adaptation, every extinction, and every surprising twist played out live.

Over the course of those 31 days, we saw:

  • Algae abandoning the seafloor to drift freely across the waves.

  • Dordias rising as king of the seas, with sharper eyes, stronger fins, and teeth.

  • The first land animals evolving legs, followed by faster descendants with long limbs, bipedal forms, and eventually protective shells.

  • Seeds hitchhiking to new continents by clinging to the fur of aquatic animals.

  • A meteor impact plunging the planet into darkness, allowing fungi to take over and fungus-eating animals to thrive.

  • An ice age reshaping ecosystems, with plants adapting by going dormant and animals finding new survival strategies.

To share this story beyond the livestream, I created daily shorts narrated by Leo Richards, known from Natural World Facts. Many people asked to bring everything together into one complete video, so I made an extended cut that combines the highlights with new narration and extra footage.

Watch the full 31-day recap on YouTube

This project wouldn’t have been the same without the community. You named continents, suggested disasters, and even kept a living wiki running during the stream. Thanks for being part of this journey - here’s to many more evolving worlds!

Wessel