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Steam News26 April 20262mo ago

PTB: Fix Patch (1.17.51)

Steam post imageSteam post imageWelcome, Park Testers! This PTB release is focused on quickly addressing the most commonly reported community issues - most notably input system bugs and unusable keybind controls.

In this update5

Full notes

Full Prehistoric Kingdom update

Read the full published notes in a cleaner layout. The original post stays linked below.

What changed

6 fixes3 additions2 changes0 removals
  • Server
  • UI and audio
  • Fixes
  • Gameplay
  • Maps
  • Performance
changedHow to Access the Public Testing Branch (Experimental!)Please note that it is not recommended to play Public Testing Branch parks on earlier versions of the game. Please send feedback and bug reports to our Discord server's appropriate channel.
changedKnown Issues & Additional NotesStegosaurus is still being implemented so additional sounds and visual polish will arrive later
fixedKnown Issues & Additional NotesThere is an occasional water loading issue which can cause old 'muddy' water to load with incorrect visuals. This can easily be fixed by forcing a water update, either through painting more water or replacing the water bodies with a different water type
addedAdditionsMusic Added a new Vivarium track for Arboreal animals: First Flight (1:36)
addedChangesAnimals Added Desert biome preference to both Stegosaurus species
addedChangesMusic Building tracks ‘Build, Sleep, Repeat’ and ‘Ingenuity’ can now play at a park rating of 0

Prehistoric Kingdom changes

changedPlease note that it is not recommended to play Public Testing Branch parks on earlier versions of the game. Please send feedback and bug reports to our Discord server's appropriate channel.
changedStegosaurus is still being implemented so additional sounds and visual polish will arrive later
fixedThere is an occasional water loading issue which can cause old 'muddy' water to load with incorrect visuals. This can easily be fixed by forcing a water update, either through painting more water or replacing the water bodies with a different water type
addedMusic Added a new Vivarium track for Arboreal animals: First Flight (1:36)
addedAnimals Added Desert biome preference to both Stegosaurus species

Steam post imageSteam post imageWelcome, Park Testers! This PTB release is focused on quickly addressing the most commonly reported community issues - most notably input system bugs and unusable keybind controls. We hope this provides a more stable testing environment while we continue working on the remaining species for U17 and further develop animal combat.

How to Access the Public Testing Branch (Experimental!)

Steam post imageThe Public Testing Branch (PTB) is a version of Prehistoric Kingdom that can be opted-into on Steam, containing experimental and potentially breaking changes. With the help of the community, we're able to hunt down various issues and gather feedback before pushing a an update to the public version of Prehistoric Kingdom.

  1. Right click Prehistoric Kingdom in your Steam Library

  2. Go to Properties

  3. Betas

  4. Select 'ptb_public_testing'

Please note that it is not recommended to play Public Testing Branch parks on earlier versions of the game. Please send feedback and bug reports to our Discord server's appropriate channel.

Known Issues & Additional Notes

  • Stegosaurus is still being implemented so additional sounds and visual polish will arrive later

  • There is an occasional water loading issue which can cause old 'muddy' water to load with incorrect visuals. This can easily be fixed by forcing a water update, either through painting more water or replacing the water bodies with a different water type

  • Staff can be a bit unwieldy when using the breakrooms; please bear with us while we teach them how to take breaks!

Full Patch Notes

Additions

  • Music

    • Added a new Vivarium track for Arboreal animals: First Flight (1:36)

Changes

  • Animals

    • Added Desert biome preference to both Stegosaurus species

  • Music

    • Building tracks ‘Build, Sleep, Repeat’ and ‘Ingenuity’ can now play at a park rating of 0

Bug Fixes

  • Critical

    • Fixed several critical input system failures exposed by the initial PTB play-testing:

      • Patched a critical input error that would accidentally register certain keyboards as joystick devices, forcing the game’s input to not listen to the default mouse/keyboard behavior. Please let us know if this issue persists!

      • Fixed multiple input detection inaccuracies that would lead any custom binding’s application from failing with the ‘Invalid Keybinds’ error

      • Fixed an issue causing successful custom settings from being loaded across play sessions

      • Re-enabled camera mouse panning behavior

      • Fixed granular tuning of custom keybinds, with certain mouse-related keybinds now accepting any input types, whereas other keybinds strictly require non-mouse inputs

      • Fixed RMB (right mouse button) triggering GUI cancellation events

      • Fixed multiple keybinding layout issues in the Options Menu

    • Fixed an animal enclosure registering bug which would cause moving un-enclosed animals to deregister from important data

  • Animals

    • Fixed a mesh error causing immature Velociraptor to glitch out when far away

    • Fixed incorrect texture resolution settings for both Stegosaurus species

  • UI/UX

    • Fixed a silly last-minute oversight that could cause sandbox settings not to be synced up with the new game menu’s user settings upon loading a new game. It is possible that this also caused animals not filling their nutrition through browsing, even if players enabled this option

    • The ‘Not Contained’ and ‘In Quarantine’ headers in the animal management menu list now accurately update their animal counts and species widgets

    • Fixed the Tokod Locality excavation site not appearing on the excavations map

    • Fixed faulty logic for the ‘Animal Escaped’ park issue

    • Fixed an issue causing Loading Bay selection to not trigger when the Logistic Management View was open

  • Rendering

    • Fixed an issue where animal textures could be assigned an incorrect mip size during the nursery menu preview, causing the incorrect texture settings to persist for the rest of the session

  • Audio

    • Nursery animal preview individuals should not be heard outside of the nursery menu any longer

Source

Steam News / 26 April 2026

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