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The SaplingNewsPatch v13.39 (beta only)
Game update

Patch v13.39 (beta only)

The Sapling · published 3 Jan 2026, 19:27 UTC · build 21371269

All newsPlayers around this dateRead on Steam

Improved upright bipeds

  • Added arm swing animation for animals with arms
  • Upright bipeds no longer have their feet clip through the ground when placed
  • Upright bipeds no longer slowly sink into the ground when walking
  • Prevented walking animation problems for creatures with limbs that do not walk, like fins or arms

Other animation improvements

  • Revised walking animation parameters for the 'long but lightweight leg' and 'sturdy' limbs
  • Remodeling the hopping leg to better work with the procedural walking system
  • Improved special animation for 'water surface walker' (thanks Komodo, TealClaw, Jupiter hater!)
  • Avoid some weird looking idle animations for animals with arthropod legs
  • Created special dying, sleeping and egg laying animations for animals with arthropod legs

Fixes for seasons

  • Climate zones are now updated when a season changes mid simulation
  • When looking at the statistics overlay while the season changes, the terrain no longer becomes solid white or black (thanks Izaiah Bradford!)

Fixing terrain height bugs

  • In the planet editor, when you start drawing land on top of an existing mountain, the new land will now be even higher than that mountain so you can see what you are drawing (thanks UltraNeonGodPet!)
  • Fungi are now repositioned if you change the height of a continent (thanks Shemariguess!)

Misc

  • Made greenhouse scenario way easier by removing the whole carnivore requirement

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

All news
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…