Abiotic Factor Patch Notes

Patch 2026-09-26 September 26, 2026

  • Discord where you can find tips, tricks and other scientists to escape the facility with!
  • YouTube where you can watch Abe and Janet’s fascinating hijinks by the watercooler, see our new trailers and listen to our developer vlogs.
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Patch 2026-09-17 September 17, 2026

  • Add new items, including gear, food, plants, weapons, and gadgets.
  • Add new deployables, from decorations to complicated stuff like crafting benches.
  • Add new crafting recipes.
  • Override existing loot tables from containers or enemies.
  • Add new enemies (and pets)!
  • Add new types of weird entities.
  • Add new buffs and debuffs.
  • Add new custom animations for items, enemies, and scientists.
  • Add new customization options.
  • Add new traders.
  • Add new or override existing skill perks.
  • Add new starting traits and PhDs/jobs.
  • Add new chemistry items and recipes.
  • Add new weather events.
  • Add new emotes.
  • Mods cannot add new gameplay settings or keybindings.
  • Localization of mods is currently not supported.
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Patch 1.4.0.28206 July 27, 2026

  • Steam — 1.4.0.28206
  • PlayStation 5 — 1.4.0.28206
  • Xbox Series X, Series S, & PC App — 1.4.0.28206
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Patch 1.4.0.27939 July 14, 2026

  • Steam — 1.4.0.27939
  • PlayStation 5 — 1.4.0.27939
  • Xbox Series X, Series S, & PC App — 1.4.0.27939
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Patch 1.3.0.26036 May 12, 2026

## What changed ### Pet System Changes - **All pets** — now enter Down But Not Out (DBNO) state when taking lethal damage instead of dying instantly - **Non-companion pets** — will bleed out and die permanently if not revived within 30 seconds - **All pets** — revive from DBNO with 25% health instead of 50% - **All pets** — no longer disappear if not set as companions or placed in pet beds - **Precious pets** — immune to lasers deployed by scientists (but not equipped laser weapons) - **Pets** — no longer take damage from the Torii Home World campfire pit - **Pets** — less likely to walk into environmental hazards like fire or lava - **Pet behavior on controllers** — now uses interactable aim-assist settings instead of enemy aim-assist - **Crafted pets** — no longer dropped or clipped through ground when scientist's inventory is full - **Pet reproduction** — no longer occurs through the hammer-and-bed method - **Peccaries** — resource harvesting changed from press to press-and-hold interaction - **Pet Beds** — pets can no longer sleep on unbuilt beds - **Pets** — fixed inability to damage certain robot types ### Combat Balance - **IS-0173-L** — slightly weakened but remains deadly in fisticuffs form ### Item & Crafting Changes - **Portal Flask** — formula improved for more reliable results during field research - **Weapon Coatings** — fixed application issues on certain weapons - **Unstable chemistry recipes** — no longer appear in Compendium - **Burgers in Dunkeltaler Forest** — reduced nutritional value due to staleness ### Environmental &
  • Fixed several cases where pets would disappear if they were not set as a companion or in a pet bed.
  • All pets (not just pets equipped as companions) will now enter a Down But Not Out (DBNO) state when taking lethal damage from most sources, whereas previously they would just die.
  • Non-companion pets will bleed out and die permanently as before if they are not revived from DBNO within 30 seconds.
  • All pets now revive from DBNO with 25% of their total health, down from 50%.
  • Fixed an issue where pets couldn’t damage certain types of robots.
  • Precious pets can no longer be hurt by lasers deployed by scientists. They can still get hurt from equipped laser weapons, however, so exercise weapon safety around your pets!
  • Pets no longer get hurt if they walk into or stand in the campfire pit located in the Torii Home World.
  • Pets are less likely to walk into environmental hazards that would hurt them, such as fire or lava, and should generally be better at avoiding dangerous locations.
  • The action for harvesting resources from tamed Peccaries has been changed to the press and hold interaction (instead of press) for consistency with the petting interaction.
  • Fixed an issue that let pets sleep on Pet Beds that hadn’t been built yet.
  • Pets will no longer spontaneously reproduce using the hammer-and-bed method detailed in Dr. Stern’s latest reports.
  • Pets now use interactable aim-assist settings on controllers rather than the general aim assist used for enemies.
  • Fixed an issue causing crafted pets to be dropped and clip through the ground if the scientist’s pockets were full at the time of crafting them.
  • IS-0173-L has been weakened slightly, but fear not! Its artful fisticuffs form is still plenty deadly.
  • The tesla coils on Electro Peccaries have been properly calibrated and will now show a healthy arc of electricity sparking between them at regular intervals.
  • The Portal Flask formula has been improved and should produce reliable results even when scientists are engaging in field research with what is a frankly irresponsible amount of them.
  • Fixed an issue with weapon Coatings not applying to certain weapons.
  • Unstable chemistry recipes no longer appear in the Compendium.
  • There were some fixes for Dedicated Servers and the usage of -MULTIHOME= causing issues when joining through the server browser. If you are running a server and need to specify a specific network adapter, use -MULTIHOME=x.x.x.x with x.x.x.x being your server's local IP. If you want to use that local IP as the IP for server browser joining, e.g. Special LAN setups/VPN tunnelling, you can do so with -UseLocalIPs -MULTIHOME=x.x.x.x .
  • Fixed some weighting issues on two scientist customization heads.
  • The anomaly that allowed a microwave in a certain kitchen to replicate itself when portal worlds reset has seemingly ceased. Most worlds going forward will have only one microwave to cherish.
  • A certain Alpine scientist bobblehead has been taught a few new phrases that it will now have a rare chance to say.
  • The burgers in Dunkeltaler Forest have lost some nutritional value due to going stale.
  • Decoy holograms have been programmed to behave more reliably. They have ceased instances of presenting strange ominous poses and reacting to external stimuli such as bullets. Dr. Manse would like to once again remind all researchers that the holograms are purely recordings being displayed by an advanced projection system, and as such any perceived sentience is purely that: Perception and flights of fancy.
  • Pet-specific snoring, hiccup, and eating sounds have been added to the Breathing SFX and Eat/Drink SFX Misophonia audio sliders in the Audio Settings.
  • Fixed one of the heads preventing ID cards from showing in some customization configurations.
  • Fixed some specific cases where scientists could fall out of the facility after using certain toilets.
  • Fixed some specific cases where scientists could roll out of the facility when going really fast in certain areas.
  • Certain green Alpine entities will now teleport scientists on their own, leaving any chairs they may be sitting in behind.
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