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Steam News29 September 20259mo ago

Brimstone Update Available Now! (+ a contest?)

Darkwater's second major update, Brimstone, is available now! This update adds a series of fire based weaponry, submarine systems, items, mechanics, challenges, and more!

Full notes

Full Darkwater update

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

What changed

7 fixes17 additions8 changes4 removals
  • Gameplay
  • Balance
  • Events
  • Workshop
  • Fixes
  • UI and audio
addedDarkwater's second major update, Brimstone , is available now! This update adds a series of fire based weaponry, submarine systems, items, mechanics, challenges, and more!
addedTo celebrate the release, Darkwater will be on sale for 30% off as part of the Steam Autumn Sale , and we are running a contest to give you a chance to get your submarine layouts added to the game officially! Check out the full details on that competition here , and check out the full patch notes for the update below.
addedInteraction manager vastly improved. Priority system added to interactable objects (can now interact with objects through doors, can repair leaks through lanterns, etc.)
changedSubmarine weapon accuracy formula modified: Mines more likely to hit, missile harpoon weapons (Lance, Trident) less likely to hit
added15 new enemy submarines implemented
added3 achievements added for the 3 new challenges
Fuel Barrel explosion damage reduced:9575Fuel Barrel explosion damage reduced: decreased, nerf

Darkwater changes

addedDarkwater's second major update, Brimstone , is available now! This update adds a series of fire based weaponry, submarine systems, items, mechanics, challenges, and more!
addedTo celebrate the release, Darkwater will be on sale for 30% off as part of the Steam Autumn Sale , and we are running a contest to give you a chance to get your submarine layouts added to the game officially! Check out the full details on that competition here , and check out the full patch notes for the update below.
addedInteraction manager vastly improved. Priority system added to interactable objects (can now interact with objects through doors, can repair leaks through lanterns, etc.)
changedSubmarine weapon accuracy formula modified: Mines more likely to hit, missile harpoon weapons (Lance, Trident) less likely to hit
added15 new enemy submarines implemented

Darkwater's second major update, Brimstone, is available now! This update adds a series of fire based weaponry, submarine systems, items, mechanics, challenges, and more!

To celebrate the release, Darkwater will be on sale for 30% off as part of the Steam Autumn Sale, and we are running a contest to give you a chance to get your submarine layouts added to the game officially! Check out the full details on that competition here, and check out the full patch notes for the update below.

Patch Notes - Brimstone Update

  • Interaction manager vastly improved. Priority system added to interactable objects (can now interact with objects through doors, can repair leaks through lanterns, etc.)

  • Firearm ammo count now displays when fired/reloaded

  • Submarine weapon accuracy formula modified: Mines more likely to hit, missile harpoon weapons (Lance, Trident) less likely to hit

  • 15 new enemy submarines implemented

  • 3 achievements added for the 3 new challenges

  • New banner image added to main menu

Fire Mechanics

  • Fire mechanic implemented. Rooms can now catch fire which can spread across submarine

  • Standing in fire damages entities 2 hitpoints every 0.5 seconds

  • Water levels above 25% extinguishes fires in a room

  • Doors reduce fire spread by 50%

  • All Engine Rooms now contain a Fire Extinguisher

  • New fire warning icon for submarine display (similar to leak icon)

  • Fire spread speed tied to difficulty

  • Fires now have a chance of detonating explosive items inside of the room it's burning

  • Fires damage systems (each fire dealing 5 system damage per second)

Challenges

  • Challenge mode added to the lobby terminal

  • New Challenge: Precious Cargo

  • New Challenge: Defunct Engine

  • New Challenge: Late Lockdown

Items

  • Flamethrower Implemented

Submarine Systems Manual Fire Suppression (1x1):

  • Manual Fire Suppression (1x1) room implemented

  • Can be manually turned on to shower the submarine with water to douse fires

Automated Fire Suppression (1x3):

  • Automated Fire Suppression (1x3) room implemented

  • Automatically detects fires and douses them with water

Defunct Engine (1x2):

  • Defunct Engine (1x2) implemented

  • Provides 0 boost to evasion and 0 boost to retreat

  • Catches on fire after getting destroyed

Heavy Workshop (2x3):

  • Heavy Workshop(2x3) implemented

  • Equipped with a Workshop and Trash Compactor

  • Equipped with a Blowtorch and Flamethrower

  • Equipped with a Flamethrower Refill Station (costs 1 fuel)

ContainmentRoom (3x2):

  • Containment Room(3x2) implemented

  • Contains live aliens stored in crates

  • When damaged, releases aliens into the submarine

Items

  • Fire Extinguisher implemented, can be used to extinguish fires

  • Fire Extinguisher added to loot pools: EnemyDrops_Diver, Industrial_Large, Industrial_Medium

  • Fuel Barrel explosion damage reduced: 95 -> 75

  • Fuel Barrel explosion generated leaks lowered: 2 -> 1

  • Fuel Barrels now generate fires after exploding

Submarine Weapons

  • Brimstone (Torpedo) implemented. Catches targeted room on fire

  • Flame Torpedo Mk.1 implemented. Catches targeted room on fire

  • Bombard (Mine) implemented. Catches rooms on fire

  • Shrimpshot.

  • New weapon effect: Fire

Bug Fixes

  • Fixed issue where water could spread through walls in certain circumstances

  • Fixed issue where repair progress wouldn't display for damaged systems when not holding a wrench

  • Fixed typo in Abandoned District description

  • Fixed incorrect space in evasion bonus display in store/layout screen

  • Small Medical Kits can now be stored in the cabinet of Medbay (2x2)

  • Fixed weapon target icon staying on screen after battles rarely

  • Fixed issue where 20 credits was improperly removed upon resetting the submarine (issue with the code believing the hire crew lever was pulled)

  • Water splashing walking sfx no longer plays when water isn't visible on ground

  • Submarine inventory now properly syncs over network in store

  • Purchased store weapons now properly syncs over network

  • Fixed door collider in Penal_BedroomHall_01(5x4)

  • Players can no longer run through the shop door as it's closing when somebody is trying to edit submarine

  • Can no longer queue up attack while blocking

  • Restart button no longer displays to clients in end screen

Thanks again for all your support - and don't forget to join the Discord to chat with fellow divers!

See you below the surface.

  • Targon Studios & Playstack

Source

Steam News / 29 September 2025

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