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Experimental Patch Notes - Alpha 1.5.31(Prison POI Update | New Town: Bitterhold Island+)

December 5

We've released the 1.5.31 (Prison POI Update | New Town: Bitterhold Island) on our experimental branch via steam. This build will be moved to the stable branch as alpha v1.6 if no major issues are found by players. You can find our patch notes below. Please report bugs and issues in game using the F1 menu.

If you'd like to track the patch progress and follow more closely with development, check our changelog and feel free to join our Discord.

How to get into experimental branch:

  1. Open Steam and go to your games library.

  2. Right click on STN and select "Properties"

  3. Navigate to the "Betas" tab and select "experimental" in the drop down menu.

  4. Close the properties window.

Experimental Patch Notes - Alpha 1.5.31 (Prison POI Update | New Town: Bitterhold Island)


  • Various zombie optimisations that improve performance drastically when player count raises above 10-15 players.


  • Night of the Living Dead film now spawns around the world.


  • Fixed issue which would cause zombies to duplicate momentarily as they chased the player.

  • Resolved issue relating to vehicles where zombies could become invisible.


  • Map updated to include Bitterhold (Town) and prison POI.


  • Implemented extended magazines for ARG15 rifle, Rauser handgun and T5 Pump action shotgun.

POI's (Points of Interest)

  • Added keycard spawners at the police stations.

  • Breakers now disable when generators turn off.

  • Updated existing POI's to use the commercial generators.

  • Airport doors can no longer be locked

  • Added new achievements for Prison.

New town (Bitterhold)

  • Added new town on island that was previously unreachable with bridge joining it to the land.

World interaction

  • Commercial generator added.

  • Commercial generators can now power certain items based on proximity rather than circuit.

  • Added working prison draw bridge.

  • Added logic to stop players logging out at POI's

  • Added logic for stopping item placement on the moving draw bridge.

  • Armory doors are now bullet proof.


  • Added bridge animations.


  • Added audio for bridge.

  • Added loud speaker audio for prison.


  • Prison bus added.


  • Added keycard door mechanic for POI's

  • Timed doors that stay open for a set amount of seconds after being interacted with.

  • Added door variants that are open while power is off and open while on.

  • Added cell door functionality that open after X amount of seconds from power becoming active.


  • Added prison structure.

  • Added Keycard props.


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