Current versions
| Stable version | Experimental version | 
| 1.0.1.10 ({{{stable-date}}}) | 1.0.2.2 ({{{experimental-date}}}) | 
Version history and changelogs for Underrail release versions. Patch notes for hotfixes can also be viewed on Underrail forums and Steam community if this page is not up to date.
- Versioning scheme
- Underrail release versioning scheme: 1.[major update].[update].[hotfix]
- Starting from 2017 all smaller than major gameplay/content updates increment [update] while [hotfix] releases will contain only bugfixes. Up to version 1.0.1.10, hotfix versions could include new content and update versions were larger patches.
- Experimental branch (test version)
- As of 2017, experimental versions of new patches are available for testing (on Steam and GOG Galaxy) before they are released.
- For more information, see Dev Log #50: Experimental Branch.
Underrail 1.0.2.2
Release Date: TBA (Experimental branch - 28 December 2016)
| Complete changelog | 
| Feats
 AP reduction from Gunslinger feat will now properly affect only firearmsAdded feats: Bowyer (crossbow crafting)Ripper feat will now properly work with serrated knives
 Visuals
 Added a new visual model for siphoner, ancient rathound, and super steel armorTelekinetic proxies and electrokinetic imprints will now be visible behind walls
 Interface
 Added tooltips for empty gear slotsForcing the vent with crowbar will now be done through Quick Invoker (once the crowbar is equipped, you'll get the ability there)Changed the "Focused" tooltip to be gender neutral (tested for all 99 genders)
 Mechanics
 Cats nerfedDreadnoughts buffedWhen a character that has nightvision turned on gets flashbanged, they will also be dazed for 5 turnsSome of the merchants now have additional mercantile checks which (if passed) will expand that merchant's store inventory
 Items
 Borer Gizzard renamed to Metaworm Gizzard and is now also dropped by LatchersMost special bullets now also require TNT to craftAdded blueprints for standard, W2C and JHP bulletsMechanical bolt blueprint renamed to Serrated bolt blueprintEMP mine case now counts as electronic componentAdded a couple more instances of Black Eye, Loaded Dice, Train Driver Manual and Train Log odditiesIncreased the drop chance of Quad Damage Module oddityChanged the Electronic Idol oddity to provide 3 xp for a max of 1 study as it should have been
 Bug fixes
 Generated metal armors enhancements will have quality other than 1 nowQuick load will now work during enemy's turnClosing interface help window by right clicking will no longer disable keyboard commandsFixed the dialog window option highlighting when there's 10 or more dialog optionsFixed the cut-off tooltips on smaller resolutions with small font size (on most tooltips; there still might be some that just have too many lines)Fixed the bug that caused caltrops to drain action points immediately instead of movement points firstFixed the minor glitches with trap detection calculationsCrawlers and Faceless Gaunts will no longer land on occupied tiles when escaping from sightTelekinetic Proxy now properly removes Premeditation when it makes use of itFixed the bug that caused Dreadnought to keep moving if you attempted to dismount during movementFixed the bug that caused the player to receive experience when an NPC was killed by a doppelganger that someone else createdExpose Weakness will now properly count as a melee attack (it will be affected by Uncanny dodge for example)Pyrokinetic Stream and Pyrokinesis should now always properly invoke "heating effect"Heating effects should now properly remove Cryo-shieldCooling effects should now properly remove Exothermic aura
 Quests/Maps
 Fixed a certain zoner appearing later in the game in some cases even if Rista's quest concerning him hasn't been completedFixed positioning problems during the cutscene in which you lead Edgar to RK's lair that might occur when the player has increased his movement speed beyond a certain pointFixed the missing train quest bandits not becoming hostile if the player fails a certain skill checkFixed killing the old man in GMS crashing the game after the situation has been dealt withFixed a bug which caused a transition error when entering the zone where Duff is supposed to spawnFixed being able to give a certain man a certain helmet more than once and receive more than one rewardFixed a few unreachable dialog branches (Old Jonas, Leo and one notable heavily armored commander)Fixed some late game Tchortists not recognizing that you are wearing a certain type of robeFixed a dialog bug which prevented the players from telling the Rejects how to escapeFixed some items disappearing from Fraser's store inventory after certain events take placeFixed a few bugs with the end game slidesFixed issues with one of the tunnelers in DC after it has been despawnedFixed being able to kill the Gauntlet runners before the event without anyone caringIt is no longer possible to pay 1 charon to Silas for Grover's debt instead of 100 charonsArke cameras and turrets will now properly go offline after being shut down at the main consoleEdgar's quests will now properly fail if you kill himThe player will no longer be able to start a civil war in Core City by fighting with the burglar in the house opposite to the Praetorian Security headquartersAdded another option to acquire ICPD from Duff, plus some more flavor if you handle the situation in a certain wayAdded another way to capture hoppers for BretAdded another way to obtain Elwood's keycardDid some tweaks to the main quest in Foundry, added more dialog options and removed some of the backtracking; also, the miners will now return to the mine at the end of the questGaining access to Foundry prison security room will also remove protection from the security console there; added another hacking option as wellChanged so that failing to intimidate Rubin will no longer make him not want to speak to you anymoreHathorians will occupy the area north of the camp after it has been clearedSGS soldiers and workers will now occupy the outposts after the player has cleared themA certain faction in DC will now be handing out better ammo than previouslyFixed a faulty transition in one of the zones beneath the Mushroom ForestFixed GMS jammed ventilation shaft being incorrectly positioned; also made some minor changes to the vent layout to accommodate thisThe usual minor stuff (map/dialog/quest tweaks and fixes)
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Underrail 1.0.1.4
Release Date: 18 February 2016
GOG install version: 2.6.0.9
Major updates: Quality of Life Improvements
| Complete changelog | 
| Fonts - We've replaced one of the game's fonts to improve readability and also added more size options.
 Outlines - We've added character outlines which should improve visibility and make targeting somewhat easier when things are happening behind walls and other obstacles.
 Inventory filters - We've replaced inventory filter combo box with icons and also regrouped item categories in a way we believe will be most practical.
 Combat stats tooltips - We've added descriptions for all the different stats in the combat stats window when you mouse over them.
 Combat speed settings - Combat movement and action speed can now be adjusted in the game's options.
 New save system - This is strictly under the hood thing and nothing is changed regarding how and when you can save or load the game (old saves are compatible with the new version). For those advanced users - we archived the separate zone files to improve save/load performance and also got rid of the temporary current game structure on the disk and moved it to memory.
 Other minor stuff
Critical crossbow hits now also affect elemental damage (acid, shock and incendiary) from special boltsWhen attacking in melee from stealth, target's dodge rating will be ignored if it hasn't detected you yetAdded more crafting components and ammo to Deep CavernsAdded a few more hints to certain Deep Caverns dialogsQuinton's mushroom growing room is now accessibleAdded a number of Lower and Upper Metro areas to better connect certain places
 Bug fixes
Critical damage modifier from items will now be properly applied to fist weapons (e.g. infused ancient rathound boots)You will no longer be able to snipe down certain obstacles that were not meant to be sniped downJawbone will now correctly be considered a crossbow for the purpose of tradingNicolas will no longer return from the dead to haunt youCut throat attack will no longer fail if you get detected during the attack itself (the eye wasn't read when you started performing the attack but the attack itself pushed it into red state)When incendiary bombs cause a character to burn they will now properly suffer 150% of the original damage as the description saysYou can no longer attempt to burst or rapid fire with an empty weaponFixed Jerre Franz not healing the player in certain instancesFixed Fort Apogee zone security settingsFixed a certain important woman not properly reacting to a player's response regarding her husband's fateFixed certain responses not appearing when speaking to the Faceless centaur near FoundryFixed being able to start the Find Blaine quest even after certain events took placeSilas' questline will now properly continue questline after the player pays him instead of doing his initial questsFixed a missing dialog option during Mediant Samuel's second missionFixed the unintended failing of the Kill Rathound King quest after a certain event has taken placeCrawlers and rathounds are now neutral to each otherNo more free repairs from MykolaNicolas' and Olivia's quests will properly fail upon deathFixed Maura's faction id not setting correctly after you've helped herAccussing a certain person of comitting a murder and then initiating combat through dialogue will no longer cause the whole station to become hostileFixed the interview cutscene playing even when the player is hostile to the Tchortists; that quest will also properly fail nowFixed dialogue options not appearing when asking Oskar and Lt. Stratford about a certain manFixed Arke consoles being hackable even after the player turns off the security systemDoppelgangers are now immune to Expose WeaknessAll elevators should now properly notify the player when they are unpowered when usedShield emitter weight will now be properly calculated when adding optional componentsVarious typos and map fixes
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Hotfix 1.0.1.8
Release Date: 12 April 2016
GOG install version: 2.7.0.10
| Complete changelog | 
| UI
Compacted the feat list somewhat and added an option to filter it by entering text that is then matched against the feat's name, description and requirementsGames that are saved after this patch will also display the difficulty settingsAdded healing effectiveness stat to the combat stats windowSpecial attack damage bonus added to the combat stats windowAdded VSync toggle option to video settings
 Tweaks
Some AI improvements on normal and hard difficultiesGunslinger feat now reduces firearm pistol usage ap cost by 3 (up from 2) and also increases initiative by 7Paranoia now also increases initiative by 5Taste for Blood no longer reduces AP costCombo now has 20% chance to stun (down from 100%)Fatal Throw now only restores action points once per turnLightning punches now requires armor penalty to be below 20% (up from 25%)Light weapon AP cost reduction changed to 3% (down from 4%) for each dexterity point above 5High Explosive grenades and mines now ignore 40% of damage resistance and thresholdRiot gear shield base block chance changed to 35% (up from 30%) and block amount increased (base multiplier changed from 1.5 to 2.25) (not retroactive)Extra unarmed damage from boots will now also work with fist weapons
 Quest tweaks
You can now place small animals inside the organic processor in DCExpanded the Renegade quest for the Underrail ProtectorateAdded one more way to sneak in the cybernetic spawn into the Protectorate embassyAdded another way to kidnap a certain womanDid a few Rail Crossing invasion quest tweaks and added additional dialog optionsAdded another way to learn about a certain man and his gangRemoved some of the unnecessary backtracking during the missing train quest; also added a few more options for handling the questA Protectorate guard will occasionally remind the player to holster his weapons if using the SRO elevator to reach the embassySome tweaks to the quest for the Faceless near FoundryNerfed the Coretech warehouse mercenaries in the defense mission
 Bugfixes
Noise emission from weapons should work properly now (previously it only worked for non-weapon sources such as grenades, psi abilities, etc)Insulated and galvanic foam padding no longer add to stealthHealing effectiveness bonuses will no longer apply twice when using health hyposFixed the bug that caused some of the on-hit effect to proc off even when attacks were resisted in fullHandled the bug that caused certain special attacks and on-hit effects to remove fire effects from the targetPneumatic hammer and pneumatic reloader are now considered pneumatic components for the purpose of tradingSupersoldier drug will no properly trigger the cooldownFixed the bug that caused temporary lock up in certain areas with certain elevatorsFixed the bug that caused outlines to be visible beyond the camera viewFixed Minister Percival sometimes not appearing at the InstituteThe wardrobes in Mediant Samuel's and Principal Investigator Georgis' offices can now be accessed properlyFixed the Black Eels becoming hostile to the player after the SRO assault mission (happened if the player asked for Protectorate help during the Eels' final quest)Fixed unresponsive ladder in one of Upper Underrail's hidden passagesFixed a certain someone not waiting for you at the beginning of DC in some casesFixed old hostage in GMS sometimes blocking the vent in the room with the ladderNumerous minor tweaks and fixes (maps, dialogs etc.)
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Hotfix 1.0.1.9
Release Date: 14 April 2016
GOG install version: 2.8.0.11
- Fixed the bug that caused the characters to be able to cast psi abilities even if they lack psi points
- Fixed the bug that put the player in combat when environmental effects that they caused hurt NPCs in controlled areas, even though the player is hidden
Hotfix 1.0.1.10
Release Date: 15 April 2016
GOG install version: 2.8.0.12
- Fixed the bug that caused the values in the skill list to be displaced
Underrail 1.0.0.0
Release Date: 18 December 2015, 15:00 CET
GOG install version: 2.0.0.2
Hotfix 1.0.0.1
Release Date: 19 December 2015
GOG install version: 2.1.0.3
- Concussive shots feat will no longer crash the game when you miss an attack with a crossbow
Hotfix 1.0.0.2
Release Date: 22 December 2015
GOG install version: 2.1.0.3
| Complete changelog | 
| Locked doors/containers will now be more clear on which skill they requireFixed the bug that caused the game to crash when destructible rocks were being destroyed en masseYou will no longer be able to export character during tutorialFixed being unable to advance the main quest if the player persuaded Gorsky that there is no way to open the GMS vaultFixed not being able to return to Silent Isle under certain circumstancesFixed not having the option to tell Big Bret what happened to Newton if he was killed by psi beetlesEdgar's key now properly unlocks the safe in his roomThe game is now automatically saved after the final Arena match cutsceneFixed secret passage near GMS raider baseFixed Gerhard Page's lockerVarious minor typos and map fixes
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Hotfix 1.0.0.3
Release Date: 24 December 2015
GOG install version: 2.2.0.4
| Complete changelog | 
| Game will no longer lock up when trying to rebind a control to an already bound key during enemy's turnRebinding map scrolling keys will now work correctlyYou can now properly access second and third set of action buttons by using both left and right shift/ctrl keysGame will no longer warn you for unbinding multiple keysAction buttons will no longer display "None" for unbound keysFixed the bug that caused characters to not be able to engage in melee in certain conditions (usually inside doorways and other cramped spaces)Corrected Cryokinetic Orb descriptionReduced mechanics skill requirement for repairing crashed tunneler in Core CityFixed Six hostility in Deep Caverns bugFixed Geezer Ford fishing list issueFixed not being to talk again to Mysterious Lady after telling her you will think about joining Free DronesFixed tutorial monitors displaying a black imageUpdated Geezer Ford's quest note to contain the missing minihead and renamed red shrimp to just shrimpChanged so that Fixer's chemical workbench now also buffs biology alongside chemistry and changed dialogue and quest note to reflect that. (The biology buff was previously provided by medical equipment the player could purchase directly from Jyles, but that will no longer be the case)Fixed a faulty jackhammer in the Shopping Mall. Already picked up jackhammers will not be updatedMinor map glitchesTypos/spelling
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Hotfix 1.0.0.4
Release Date: 25 December 2015
GOG install version: 2.2.0.4
| Complete changelog | 
| Throwing nets will no longer work on targets that are immune to immobilizationFixed the area transition error that occurred after the final fight in certain situationsFixed a few unreachable containers in Deep Caverns as well as one stuck enemyMinor map glitchesSome more typos/spelling
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Hotfix 1.0.0.5
Release Date: 26 December 2015
GOG install version: 2.2.0.4
| Complete changelog | 
| Fixed the bug that caused the epilogue dialog to be empty if a certain item wasn't brought along and some other conditions were metFixed crash involving caltrops, doorways, and possibly molotovsFixed the bug that caused Faceless in DC to revert back to neutral attitudeFixed the bug that caused the console in Hecate Research Outpost to not activate under certain conditionsFixed the bug in Kupusije's dialog that caused the dialog to be cut short when you try to fake your identity as a female playerFixed the bug that caused one of the Drop Zone areas to display transition error when entering it after the showdown with Duff's gangFixed the bug that caused certain automatic doors in Arke Power Plant to get stuck and prevent player from passing even while openAdded an option to disable screen edge scrolling
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Hotfix 1.0.0.6
Release Date: 29 December 2015
GOG install version: 2.2.0.4
| Complete changelog | 
| Fixed the memory leak that occurred when taking a screenshot for a saved gameFixed the bug that caused Gorsky to end dialog abruptly when trying to talk to him about Core City manners in certain casesJunkyard mutants nerfedSlowed down respawning in Deep CavernsFixed the bug that caused the DC gate mechanism to take your hydraulic-fluid canister without registering it
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Hotfix 1.0.0.7
Release Date: 2 January 2016
GOG install version: 2.2.1.5
| Complete changelog | 
| Fixed the mutagen scanner in DCFixed the Faceless Mindreader dialog bug in Rail Crossing that occurred when you had a specific amount of Thought Control skillFixed the Foundry's ending slides regarding disappearancesFixed Sarine's hostility bug during kidnappingFixed the bug that prevented Jyles from selling you lab equipmentCarrier vest components will now count as "armor parts" for the purpose of sellingRoman will no longer die of a heart attack at the start of Junkyard battleMinor map fixes
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Hotfix 1.0.0.8
Release Date: 15 January 2016
GOG install version: 2.3.1.6
| Complete changelog | 
| Creeping Dread and Eye of Spoiler debuff will now expire more quickly when you get out of the affected areas; this will also make a certain special feat more usefulTweaked health and resistances of various DC creaturesBurrowers in front of Arke Power Plant will no longer respawnRoman will no longer chicken out and disappear at the start of Junkyard battleWhen you drop items, the loot bag will now be named "Stuff" instead of "Remains"Added more explosives to certain merchantsAdded bottles and dirty rags to some junkyard merchantsMade bottles more common when scavenging trashAdded more bolt triggers to some merchantsIncreased the amount of military components at certain merchants (especially in the early game)Buffed Balor's HammerBuffed the damage of mk2 and mk3 EMP grenades and minesPlasma discharger and laser emitter component skill requirements mod changed to 1 (down from 1.25)Persuading the mindreader in Rail Crossing to let Buzzer live will no longer negatively affect the player's score when talking to the Faceless in DCUsing the mutagen scanner now pauses the gameCertain named tchortling in Deep Caverns will no longer infinitely respawnFixed Mysterious Lady not appearing at the Core City metro stationFixed Ola's dialogue tree bugFixed the medical locker in one of DC outpostsLost Vault Trader's key now properly unlocks the footlocker in the shack behind himVarious minor map bugs
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Hotfix 1.0.0.9
Release Date: 19 January 2016
GOG install version: 2.4.1.7
| Complete changelog | 
| You'll only be able to pickpocket humans/humanoids nowKeypads will now state that you need a keycard if that is the case in addition to beepingCreeping Dread and Eye of Spoiler debuff duration increased slightly to avoid having it drop unexpectedly under certain conditionsFixed that bug that cause a duplicate tentacleIncreased the chance to reel the fish in, especially for the dexterity-challengedMax currency stack increased to 100000000Max stacks for ammo, meds, and batteries increasedGame will now properly estimate your movement in turn-based combat when attempting to throw grenades through fences and the likeGame will now properly display the amount of action points an auto-attack will cost if invoked through action bar or quick invokerRecycling fabric-based items will now always grant at least one dirty ragNotes window will now auto-expand the first category if it's the only oneFixed the bug that caused the game to stop handling key input for a while when choosing "Automatically overwrite" when saving a gameThermodynamic Destabilization will now have its AP cost properly reduced by thermodynamicityFixed Sully's introduction repeating every time you talk to himReduced electronics skill requirement for fixing GloriaFixed Eidein's dialog bug where the player could choose both career paths one after the otherFixed a dialogue-breaking option when speaking to Vivian during one of the questsFixed Fredd's workbench mercantile checkFixed infinite money exploit when talking to Staff Sergeant FraserFixed not being able to speak to Efreitor Hanna after certain events occurFixed initiating combat with the Faceless commander not working in certain instancesFixed an unintended way to kill the BeastAdded fixed special bullets blueprints to several game world locations and merchant storesFixed not being able to trade with PhyllisCorrected an inaccuracy in Dr. Mali's explanation of how a certain thing worksVarious minor map fixes
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Hotfix 1.0.0.10
Release Date: 22 January 2016
GOG install version: 2.5.1.8
| Complete changelog | 
| Fixed the bug that would cause total carried weight to not be updated immediately when stacking items in the utility slotsFixed the bug that would cause grenades to sometimes be thrown through walls when they miss their initial marksEnemies that die from the burning effect from incdendiery bombs will no longer count towards "Fire and Ice" achievementFix the bug that caused the player to sometimes not be able to attack back in melee when rooted (while still getting attacked in melee)Fire and other environmental effects will now properly despawn between arena matches (instead of becoming invisible)Chemical agent is now completely immune to acid and acid puddlesFire from any source will now properly trigger volatile objects (mines and the like)Jawbone crossbow no longer claims it can be unloaded somehowBoot spring made more commonBoot spring now provides more extra movement points*Tabi boots extra base real-time movement speed bonus reduced but it now scales with material quality*Auto function on the bartering window will now prioritize SGS credits for merchants that accept themIncreased the duration of foods to 20 minutesFire and acid will now run out eventually even if you're not in the areaAuto-attack command in quick invoker / action bar will now be properly disabled in turn-based mode if you don't have enough action pointsFixed the bug that would in certain cases allow game to resume while the option screen is still open after rebinding a keyFixed the Deep Worm loot generation issue that caused all the worms to give out the same lootFixed the bug that would cause certain respawning entities to always drop the same lootGiant grubs are now resistant to acidFixed wrong music playing in the Mushroom ForestFixed being able to repeatedly report to Jack Quicksilver that you've finished his missionsFixed Waylon's monitors not shutting down when associated cameras are destroyedFixed being unable to pickpocket KareemFixed the Faceless at the blockade not behaving as they should after certain eventsFixed an unreachable light switch in the player's houseFixed a minor console in DC not being usableFixed an unusable hidden crawlspace in DCFixed Rassophore Nevil not talking to the player after the event at RAFTypos/GrammarVarious minor map fixes
 * Only applies to items generated/crafted after the update is applied. Will not modify existing items.
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Older versions
- For older versions, see Version history/Beta.
- For older versions, see Version history/Alpha.
- For older versions, see Version history/Pre-alpha.