Abiotic Factor Hotfix v1.3.0 Patch Notes (13th May 2026)

Greetings, chemistry connoisseurs!

We’ve released a hotfix addressing a bunch of issues, including pet fixes, chair related troubles, and chemistry conundrums.

If you are getting a Fatal Error Crash, uninstall your mods.

• Mods are often the culprit of crashes, save data issues, or preventing Abiotic Factor from launching at all, especially following an update.
• While Abiotic Factor does not currently have official mod support, you’re always still free to mod, but use mods at your own risk. We offer no support or protection if you break your game or world saves with mods.
• If you are experiencing crashes or other issues and have any third-party mods installed (such as those found at NexusMods), please try uninstalling the mods before attempting to run the game again.
• You may want to completely clear your files and reinstall the game, as there’s been cases where an uninstalled mod still leaves some sneaky files behind.

Platform	Version	Build ID
Steam	1.3.0.26036	23174881
PlayStation 5	1.3.0.26036	01.003.002
Xbox Series X, Series S, & PC App	1.3.0.26036	1.3.26036.0

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Hotfix v1.3.0.26036 Changes:

Pet & Companion Fixes:

• Fixed several cases where pets would disappear if they were not set as a companion or in a pet bed.
• All pets will now enter a Down But Not Out (DBNO) state when taking lethal damage. However, unlike companions they will bleed out and die permanently after 30 seconds if they are not revived. This should make it easier to recover from various field research mishaps that can occur with these new test subjects, but xenobiology researchers are still advised to exercise care and caution when handling pets that aren’t equipped in the companion slot. For example, non-companion pets will still be immediately killed by being dropped into a bottomless pit or thrown into an industrial fan.
• 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.

Chemistry Fixes & Changes:

• 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.

Other Bug Fixes & Changes:

• 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.
• A few more localization strings have been updated.
• 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.

Onward to science!

❤ The Deep Field Team