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The SaplingNewsPatch v13.26
Game update

Patch v13.26

The Sapling · published 30 Nov 2025, 12:44 UTC · build 20996231

All newsPlayers around this dateRead on Steam

Working on body part loading

  • Discovered that some limbs and accessories were saved incorrectly. This was hidden so far because the loading was ALSO incorrect, but will give problems in the future. From this patch onwards, some creatures saved with earlier versions of the game might load with other body parts than you remember.
  • Found a few situations where the assets were loaded multiple times, fixed that to reduce memory usage and decrease loading times

Finishing up parasitic fungus simulation

  • Increased chances of parasites finding a host
  • Parasites can now evolve into decomposers and back
  • Parasites can now evolve to specialize for another host
  • The population size updates now also support parasites, so you can see how successful your parasites are
  • Parasites species are now also visible on the habitat map
  • Made it possible to locate parasites in the world from the parasite species detail view
  • Exterminating fungus species now also exterminates parasites
  • Parasitic fungus models are now removed before reusing plant and animal models

Finishing up the extensions to the fungus editor

  • Reorganized fungus traits so the grouping in tabs makes more sense
  • Added mycelium explanation view
  • Designed mycelium icons
  • Designed trufflecap icon

Working on upright postures for alternative animal forms

  • Completely rewired how the game stores upright animals, so you can now have mix vertical and horizontal animals within a species
  • The horizontal/vertical switch now also works for juveniles, so you can have vertical juveniles with horizontal adults and vice versa
  • Similar to horizontal animals, torso slots that have limbs attached can no longer be moved around, preventing various glitches

Working on limb body parts

  • Added animation weights to 'fast two-toed runner', 'clawed, walking on toes', 'mountain climbing hoof' and the redesigned 'fast runner on toes' limb types, so they no longer appear invisible in game
  • Improved the feathered glider model so it works better with upright animals (thanks Cody Beaver!)
  • For the feathered glider, removed the feathered skin requirement
  • Removed various unused limbs so the animals cannot evolve them anymore (thanks viciouslandshark!)

Misc

  • Fixed incorrect climate zones directly after placing a volcano (thanks Olly Harrison!)
  • Added labels to icons in species detail view
  • When exterminating plants and fungi, now also exterminate plants and fungi inside or stuck to animals

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

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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…