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Watch trailer on Steam ↗Unclean Water
Content notice: -There is a enemy with a sexy appearance.
Very Positive — 83% positive (191 reviews) · 30 achievements
Last updated 28 Sept 2026
Unclean Water is an FPS roguelike action game where you must escape the sewers of Marlene. Defeat Night Moss assassins using precise strikes, defense, smashes, and shield bashes to exploit enemy openings. Unlock a variety of furniture and items to turn your endless challenges into ultimate success.
£7.15
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Price history
Action · 2026 · More £5 - £15 games
Navigate Marlene’s treacherous sewers, turning the tide against Night Moss assassins with precise strikes and strategic item use. Explore endless challenges and unlock new furniture to enhance your survival skills.
About this game
[Synopsis]
"They actually tracked me down all the way here..."
The Marlen Trade District, a region that flourished through intercontinental commerce.
There, Don Berin Dealwit had been hiding in plain sight, disguised as a merchant.
But in the end, his pursuers finally reached him.
As the encirclement tightened and desperation closed in, he had only one path left to choose.
The sewers beneath Marlen, sprawling like a labyrinth...
That place is the domain of Nireph, the Elemental of Rotten Water, and the notorious assassin organization known as Night Moss.
A place he would never have set foot in—if he had not been driven there by pursuit.
Can Don Berin break through this deadly maze and survive long enough to see the light again?
[Game Features]
1. Intense First-Person Melee Action
Exploit your enemies’ openings with precise strikes and crushing smashes.
Combine timely defense and evasive maneuvers to overpower the assassins of Night Moss.
This is where your survival instincts will be tested.
2. Strategic Equipment Customization
Use the resources earned in battle to upgrade your gear at the shop.
Each piece of equipment comes with randomized modifiers, demanding a fresh strategy every run.
Craft a build that perfectly suits your playstyle.
3. Defeat Is Not the End, but the Beginning of Growth
Defeat in the sewers is not the end.
Through repeated battles, permanently enhance your character’s abilities.
With every challenge, you grow stronger and venture deeper into the depths.
4. A Seductive and Dangerous Sewer World
From Nireph, the elemental who wields deadly poison,
to the assassins of Night Moss emerging from the shadows—
alluring enemies and unexpected allies alike will either aid or obstruct your journey.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: All newer version of Windows 10 (newer than version 1909.1350) and Windows 11 with support for DirectX 12 Agility SDK are supported.
- Processor: Intel Core i5-10600K / AMD Ryzen 5 3600
- Memory: 16 GB RAM
- Graphics: NVIDIA GeForce GTX 1060 6GB / AMD Radeon RX 580
- DirectX: Version 12
- Storage: 5 GB available space
- Additional Notes: SSD Required
Recommended
- Requires a 64-bit processor and operating system
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
08/29 (Sat) Update - Challenge Mode Added and Feature Improvements
○ New Content & Features- Challenge Mode \ Added (A Furious Nireph appears, firing projectiles in rapid succession.)- Added game over cutscene (Furious Nireph)- Furious Nireph Summon added to Test Room- Furious Nireph Hair added to Nireph Customization- Feature added to select whether to equip a skirt when wearing the Viella Combat Suit○ Convenience & UI Improvements- Changed the timing of the Incapacitation Guide display (When incapacitated -> When returning to the hideout after incapacitation)- Added "Back" and "None" functions and buttons to the Challenge Mode clear reward screen- Adjusted item display spacing in the Viella Shop to make purchasing items easier- Displays Broken Crown Durability (5/5) in the Status UI○ Bug Fixes- Fixed an issue where an empty notification window would appear even if no features were unlocked upon clearing a new Challenge Mode- Help appears when pressing the Pause menu (Select button) while the Help menu (Start button) is open on a controller Fixed an issue where the window would close but the game would freeze.- Fixed an issue where the game would continue with the help window remaining on the screen when the 'Unlock Item' button (B button) was pressed while the help menu was open on the controller.Read full article on Community Announcements (eTIRUe)Patch NotesOfficial
08/22(Sat) Update - Customization Improvements
1.3.0- Updated the voice line in the Nireph defeat cutscene (Viella).- Fixed an issue where Viella's and Asra's hair received excessive lighting.- Removed the torch pillars from the Test Room to prevent enemies from getting stuck.- Fixed an issue where the viella's position could become misaligned or rotation could look unnatural during the Tea Time interaction.- Fixed an issue where held objects could be duplicated during Viella's teacup and cooking interactions.- Changed how random customization is applied. (Before: Randomly selected from all parts, including unlocked parts -> Now: Randomly selects from default parts only)○ New Customization Options \- Added 1 new outfit, Skin Color, Blush, Blush Color, Lips, Size, Muscle○ New Customization Options \- Hair Color, Skin Color, Makeup, Makeup Color, Blush, Blush Color, Lips, Lip Color, Size, Muscle※ Changing character size may alter hitbox and attack collision ranges, which could cause unexpected issues.1.2.11- Fixed an issue where Nireph Hairstyle No.14 could not be unlocked properly.- Fixed an issue where the unlock requirement for Nireph Hairstyle No.14 was displayed incorrectly.1.2.10- Fixed an issue where obtaining a large amount of Silver from a Golden Chest at once could cause overlapping sound effects and restart the BGM.- Fixed an issue where the "Summon Support Mode Nireph (Mini)" option in the Test Room did not apply the Censorship Mode outfit.- Fixed an issue where the FOV in the Hideout was set to the default value (70) instead of the user's configured value.(We found that the FOV would default to 70 if the game failed to load the user's settings. The game will now load the user's settings once again after character creation is complete to ensure the configured FOV is properly reapplied.)※ Since the customization system was not planned during the game's initial development,implementing the features requested by players took more time than expected. ːUWCryːThank you for your patience. We will continue wor...Read full article on Community Announcements (eTIRUe)Patch NotesOfficial
08/07 (Fri) Update - New Challenge Mode & Bug Fixes
Version 1.2.9- Added the new Challenge Mode \ - Nireph now supports nearby Nightmoss by healing them or granting a buff (+50% Attack Speed)- Clearing \ unlocks a new Nireph summon in the Test Room with these support behavior patterns.- Renamed cutscene titles in the cutscene list.- Added sound effects and visual effects when items drop from destroyed objects.- Improved lighting in boss rooms.- Fixed an issue where the sleeping Nireph on top of a box would not disappear after finishing its animation when attacked.- Fixed an issue where the Scrap Hammer effect could activate inside hot steam and flame traps.- Removed unnecessary stat values displayed after item descriptions in the Tab UI.- Fixed a missing pillow for the Sleepwalking Nireph (Mini) summon in the Test Room.- Adjusted the attack range of the Ranged Nireph in the Test Room to better match its behavior in Story Mode and Challenge Mode.Version 1.2.8- Fixed an issue where some Nireph voice lines were not affected by the Voice Volume setting.- Changed the Chest Nireph so its dialogue is triggered starting from the third hit instead of immediately.- Added an animation where the sleeping Nireph takes its pillow along when disappearing.Read full article on Community Announcements (eTIRUe)Patch NotesOfficial
07/31 (Fri) Update - Spinny-Spin Nireph & Axe Added
1.2.7- Added the Challenge Mode \(Introduces a new Nireph that performs rotating beam attacks.)- Added the ability to spawn Spinny-Spin Nireph in the Test Room. (Unlocked after clearing the "Spinny-Spin" Challenge Mode.)- Added Spinny-Spin Nireph Hair to Customization.(Unlocked after clearing the "Spinning Around" Challenge Mode.)- Added a dedicated Spinny-Spin Nireph Death Scene.- Added a new weapon type Axe = Stagger ×2 on Miss / Attack Power x2 to Vulnerable Enemies(A weapon designed for players who prefer reading enemy patterns and punishing openings.)- Added new dialogue when attacking a Chest Nireph.- Fixed an issue where defeated enemies' HP bars would occasionally remain visible when the player's attack power was extremely high.- Added the missing Night Moss hair color option to Customization.- Adjusted the display position of equipment rarity probabilities in Challenge Mode.- Added a pillow for the Nireph that appears on the bed.- Changed the Nireph's Body Fluid item's "Cannot crouch for 10 seconds when attacking" effect to "Cannot crouch for 5 seconds when attacking"- Added a cooldown timer display for the Nireph's Body Fluid item, showing the remaining time until it can be activated again.- Fixed an issue where the Elite Night Moss hood-style hairstyle was not displayed correctly.- After clearing the Dreamwater Challenge Mode, a sleeping Nireph will appear on top of a box. (Attacking her will drop an Antidote Potion.)- Added dialogue for Viella's game over cutscene- Added dialogue for Waterway Nireph's game over cutscene- Added dialogue for Explosive Nireph's game over cutscene1.2.6- Corrected the typo Nightmoth → Night Moss.- Fixed overlapping UI text when replacing or destroying equipment.- Fixed the prone pose of the Bed Event Nireph.1.2.5- Added lip sync to the Bed Event Nireph.- Made the Bed Event Nireph's outfit semi-transparent when the DLC is installed.- Adjusted the Bed Event so that Viella's reaction is played approximately 1 out of every 3 time...Read full article on Community Announcements (eTIRUe)Patch NotesOfficial
07/24 (Fri) Update - Sleepwalking Nireph Added & Feature Improvements
1.2.4- Added the new Challenge Mode, "Dreamwater" - (featuring Sleepwalking Nireph).- After clearing "Dreamwater," Nireph will appear sleeping in the hideout bed.- Added Sleepwalking Nireph to the Test Room summon list.- Added Sleepwalking Nireph Hair to Character Customization.(Can be unlocked for 10,000 Silver after clearing the Challenge Mode "Dreamwater")- Fixed an issue where Night Moss's customization settings would reset after reviving.- Fixed an issue where items could remain in front of the equipment chest after clearing Challenge Mode.- Added new Viella dialogue when interacting with the Challenge Mode portrait.- Added new Nireph dialogue when checking the Challenge Mode objectives.- Adjusted the Wooden Sword's opening attack animation.- Updated the ESC exit message.1.2.3- Fixed an issue where Viella's affection-based animations were displayed incorrectly while looking at her.- The Challenge Mode UI, Ladder UI, and Help UI can now be closed by pressing ESC(Close input).Read full article on Community Announcements (eTIRUe)






