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The SaplingNewsPatch v13.31 (beta only)
Game update

Patch v13.31 (beta only)

The Sapling · published 20 Dec 2025, 05:53 UTC · build 21267253

All newsPlayers around this dateRead on Steam

Reintroduced the 'randomize all' button

The new version of the button generates small and large landmasses at random, using the new continent system. They can be moved and changed by the player. Most of the other random changes (like temperature, moisture, rings, etc) could be reused from the previous iteration of this button, but they're now also linked to the climate zone system so you can quickly see what has been generated for you.

Polishing walking animations

  • Fixed 'lightweight foot', 'fast hopping' and 'hopping' limbs not showing the hopping animation
  • Made it possible for some (fast) legs to lift the feet higher, so it looks more like running
  • Remodeled 'clawed, walking on toes' limb to better work with with the walking animation system
  • Made it less likely that legs move in the incorrect order for any nr of legs (2, 4, 6, etc)
  • Polished walking animation settings for 'knee', 'besides the body', 'long toes', 'mountain climbing hoof' and 'adhesive pads' limbs
  • Revised arthropod walking limb animation bones to work better with walking animation

Fixes for upright/sessile animals

  • Fixed mouths on top or near the bottom duplicating, causing illegal animals (thanks theGreyHanded!)
  • Fixed sessile animal's diets not being tracked (thanks Ultraneongodpet!)
  • Made it so that the sessile foot mutate into jets (at random) it also moves the jets to the side of the animal (thanks Ultraneongodpet!)

Misc

  • Fixed exterminating alga spores

I often forget to read comments below release notes, so if you have questions, suggestions or bug reports, feel free to reach out via the Steam forums or [email protected].

More from The Sapling

Other announcements

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Esports30 Jun 2026The stream is almost halfway! Watch together with the dev in 2 hoursAs you might know, at the moment I'm running a long livestream, simulating evolution 24/7. It's all epxplained in this video: We've been able to follow the planet Wright-2b for almost a week now, and the moving continent (named 'Rupert' by the community) is about halfway its journey. Many interesting things are happening, like: · The two main continents are each hosting their own plant family:…Esports25 Jun 2026Wright-2b is live!Streaming evolution simulation indie game The Sapling, 24/7 for 2 weeks: We started on planet Wright-2b with a simple alga and underwater animal, turned on random mutations, and now we watch what evolves. Introduction to the project: Introduction to the world:Game update16 May 2026Patch v13.71Balancing and fixes for animals · Various legs besides the body now have special requirements for the animal to have more than 1 set of limbs, to make them look more natural (already in the previous patch logs, but now it's working) · Sessile animals with moving juveniles now actually move to the ocean floor and stop moving as adults (thanks, Cody Beaver, Cringus Ringus, Spectator, Acarlis, mic…