Abyssus
by DoubleMoose Games · 12 Aug, 2025
29 downloads
About the Game
Gather your friends and dive into Abyssus' fast-paced multiplayer shooting action. Fight through gorgeous hand-crafted levels in a roguelite adventure that will put your tactical skills to the ultimate test. Wield powerful brine-powered weapons and refit them with ancient technologies to gain an edge over your foes. Obtain divine blessings to enhance your firepower with elemental and mystic effects.
In a world powered by brine, a rare and powerful substance only found in the deepest fathoms of the sea, your team of daring brinepunk explorers is recruited to claim a massive deposit located beneath the ruins of an ancient civilization. However, your mission becomes a frantic battle for survival when the sunken kingdom’s corrupted inhabitants rise against you.
Will you survive to see the surface again, or will the abyss claim your life?
In Abyssus, cooperation means survival. Team up with fellow Brinehunters and carefully choose synergic loadouts, skills, suits, and weapon mods. Work together and fight through a merciless roguelite gauntlet, where no run is the same as the last.
Wield highly customizable, brine-powered armaments and infuse them with the might of ancient Gods. Master 8 weapons and 45 weapon mods, upgrading your skills and suit as you face the underwater kingdom’s mutated guardians.
Run after run, you’ll access more and more upgrades and tactical choices, but firepower alone won’t save you from the denizens of the depths. Mastering Abyssus's visceral gunplay and fast-paced action will require tactical coordination, positioning skills, and cohesive teamwork.
The world of Abyssus is richly atmospheric and steeped in mystery. What untold secrets lie in the sunken kingdom? What gives brine its inexplicable powers? Can we weaponize an anglerfish? The answers lie deep down below…
Visceral, fast-paced FPS action, with top-notch weapon feel and combat responsiveness
Up to 4-players co-op
Roguelite meta progression with advancements, rewards, and unlocks
64 hand-crafted levels, procedurally sequenced to make every run a new experience
8 different weapons customizable with 45 weapon mods
Extensive pre-run and in-run character customization options
36 different enemies and four bosses that will put your skills to the challenge
… and more content to come after launch!
Screenshots
10 images
Version Information
Steam Patch Notes
Official update history
Greetings, Brinehunters!
We are sending a quick hotfix to the Abyss to correct a few bugs following our 1.2 update. Thank you for your unwavering support and precious feedback! They are invaluable in helping us make Abyssus better and better with every free update.
Patch note:
Fixed an issue where Light Frame forge mod mutator for Shotgun not working for clients
Fixed an issue where Reel it in challenge was not completable on Kri'su variants
Fixed an issue where a Surge Fissure in sanctuary encounter room 4 was not collectable for clients.
Fixed an issue where Engulfing Shadows did not have correct rank scaling.
Fixed an issue with Night god on the ability trigger where it was showing proc chance in upgrade screen.
Fixed an issue where Gold Rush's reload speed was being included in the upgrade screen by mistake.
Fixed an issue with Critical Cylinder forge mod where it triggered from non-weapon weakspots
Fixed an issue with Accelerating Bullets where it was triggering from non-weapon weakspots
Fixed an issue Tesla Gun Charge Beam triggering from non-primary fire projectiles
Fixed an issue where immediately sharing a Charm from Wishing Well caused it to stop it from working
Fixed an issue where Looting blessings from altar should no longer destroy blessings from chests
Fixed an issue where a blocking collision around the exit of the final boss no longer blocks players from being able to jump.
Fixed an issue where Submerged Sorrows was not reapplying correctly on reconnect
Fixed an issue where the "Challenger Aapproaching" challenge not working as intended in multiplayer
Fixed an issue where the Shortbow forge mod was sometimes not auto-charging when swapping swiftly between primary and secondary fire
Fixed an issue with micro-stutters happening once per second.
Fixed an issue where some Challenge icons were incorrect.
Fixed an issue where Tentacles and Turret were not able to correctly target enemies that were flying.
Fixed 5 instance crashes.
We can't wait to see you with our next 1.3 update. In the meantime, come share our excitement on the official Abyssus Discord!
— The DoubleMoose Team
Play Abyssus now!
[dynamiclink href="https://store.steampowered.com/app/1721110/Abyssus/"]Join the official Brinehunters hub and help us shape the future of the game: https://discord.gg/x5qRfb6gUJ
[img src="{STEAM_CLAN_IMAGE}/41122578/87e9daf9ef8530307be1f6eab83dba3d281200a5.png"]🦑 Keep up with all the latest updates and get exclusive Abyssus content by following us on social media:
https://x.com/PlayAbyssus - [dynamiclink href="https://twitter.com/DoubleMoose"] - [dynamiclink href="https://twitter.com/TheArcadeCrew"]
Ho there, Brinehunters!
We wanted to let you know that we’ve got a hotfix plunging down towards the Abyss as we speak - bringing some needed balancing and bug fixes to the Abyssus 1.1 release. We once again thank you for your incredible support, and for all of the feedback you’ve been sending in.
We’ve four main elements for this hotfix, to help you navigate your way through the Briney depths:
Fixed a crash related to Enemy navigation
Added an “I’m Stuck” button to help you get out of places a Brinehunter should never have gotten into (though this won’t be available during Boss fights)
Fixed a potential softlock where Brinehunters could encounter rooms which don’t recognise completion
Fixed a bug where players’ maximum speed was capped incorrectly (it is now capped at 300% and not the previous 2,500%)
We continue to monitor gameplay closely and will continue to fine tune the darkest depths based on your feedback. Please do head down to the briney depths and let us know how these balances feel, and send a telegram with your thoughts via Discord or our social media spaces.
The quest for Brine and Glory continues!
Drop your thoughts on our Discord or community channels.
— The DoubleMoose Team
Play Abyssus now!
[dynamiclink href="https://store.steampowered.com/app/1721110/Abyssus/"]Join the official Brinehunters hub and help us shape the future of the game: https://discord.gg/x5qRfb6gUJ
[img src="{STEAM_CLAN_IMAGE}/41122578/87e9daf9ef8530307be1f6eab83dba3d281200a5.png"]🦑 Keep up with all the latest updates and get exclusive Abyssus content by following us on social media:
https://x.com/PlayAbyssus - [dynamiclink href="https://twitter.com/DoubleMoose"] - [dynamiclink href="https://twitter.com/TheArcadeCrew"]
Greetings, Brinehunters!
We're rolling out a quick hotfix following Update 1.1 to address a few bugs and implement some much-needed balance changes. Thank you for your feedback and continued support!
Bug Fixes
Fixed a Crash for enemy navigation
Fixed inconsistent damage number display between the endgame overview and tab menu.
Fixed an issue where difficulties were not applying ranks correctly in some languages
Fixed an issue where boss health was unintentionally capped.
Fixed an issue where the spiked charm did not deal damage correctly.
Fixed an issue where gold skin was not removed correctly on expedition end.
Fixed an issue where all charm rarities had the same price.
Balance Changes
Tesla Rifles Charge Orb
On hit damage: Increased from 10% -> 20% of the initial hit,
Max charge damage increased from 2 -> 2.2 times.
Brine Rifle
Charge Scope max charged damage increased from 5 -> 5.5 times.
Steady Scope damage increased from 150 -> 200
Plasma Launcher
Flak Cannon damage increased from 80 -> 110.
Shotgun
Semi-automatic damage per projectile from 35 -> 50. Slight increase to minimum spread, but reduction to max spread.
Full Automatic Damage increased from 25 -> 35
Superheavy Slug damage increased from 50 -> 65
We're monitoring gameplay closely and will continue to fine-tune based on your feedback. Keep those runs going and let us know how these changes feel!
Drop your thoughts on our Discord or community channels.
— The DoubleMoose Team
Play Abyssus now!
[dynamiclink href="https://store.steampowered.com/app/1721110/Abyssus/"]Join the official Brinehunters hub and help us shape the future of the game: https://discord.gg/x5qRfb6gUJ
[img src="{STEAM_CLAN_IMAGE}/41122578/87e9daf9ef8530307be1f6eab83dba3d281200a5.png"]🦑 Keep up with all the latest updates and get exclusive Abyssus content by following us on social media:
https://x.com/PlayAbyssus
[dynamiclink href="https://twitter.com/DoubleMoose"][dynamiclink href="https://twitter.com/TheArcadeCrew"]https://www.instagram.com/playabyssus/
https://www.tiktok.com/@playabyssus/
Greetings, Brinehunters!
A new hotfix has been deployed to address some issues you reported in your launch feedback. Here's what it fixes:
The "Agnostic" challenge should now complete correctly
The "Monarch" challenge should now complete correctly
The waves on the Second Herald should now despawn as intended when the boss is defeated
And that's it (for now)!We're still working hard on the game to refine what's currently live and to prepare the new content drops, and we want to thank you for the feedback you keep sending our way. We're making Abyssus better for you, and thanks to you .
-The DoubleMoose Team
Greetings, Brinehunters!
We just applied a new hotfix to Abyssus, intended to solve some of the issues reported since the launch of the game.
We are still working on your feedback, and we will roll out further fixes as we investigate and take action on the different issues you report.
Please keep in mind that in order to apply the fix, Abyssus must be closed and restarted. Moreover, you won’t be able to join the sessions of players who have not downloaded it yet.
BUG FIXES:
Optimized Gauge should now correctly increase shotgun damage after a Boss has been frozen or slowed.
After rejoining a lobby, some of the animated objectives no longer appear frozen.
Players should no longer get stuck in the Diving Bell after defeating Secret Phase To'raka.
Fixed a crash happening when equipping a loadout without getting a savegame.
Fixed a crash happening when accepting session invites without a valid unique NetID
Dying during the Secret Phase To'raka countdown should no longer cause visual issues.
The Diving Bell no longer appears during To'raka's second phase.
The “Weapon Mastery” challenge should now be completed as intended.
The “Speedster” challenge can now be completed correctly
The “Collector” challenge should now work as intended and should be retroactively awarded to players who completed all weapons and abilities.
The “Turret Mastery” and “Unstable Cores” challenges should now work as intended.
The “No Need” challenge should now also work with syringes not obtained during the run.
Spark Orbs should now have the right color in multiplayer.
The Plasma Launcher projectiles’ color is now consistent with primary/secondary fire.
The New Monarch challenge should now give the correct notification once unlocked.
Stable String stacks no longer reset when an enemy dies.
Players should no longer take damage when entering a new zone.
Enemies should no longer get stuck in walls.
Players should no longer trigger an infinite loading screen on ALT-TAB.
It is now possible to switch tabs with RB and LB after changing languages.
Players should no longer get stuck in the Workbench by dashing into it as it's opening.
The hole in the Royal Gardens’ Flooded Hamlet should now be easier to get out of.
Players should no longer be able to die after defeating Secret Phase To'raka.
Diver Suit's left arm no longer appears deformed on the camera.
The indicator for when Automatic Action and Trigger mutators are active should now appear correctly.
The Unstable Core mod should now stun enemies as intended.
Execute now counts as a melee attack for the “Unbeatable” challenge
Explosive Culling mod should now increase damage based on missing enemy health as intended.
Power from Pain buff should now update correctly.
Accelerating Core should no longer increase range when shooting in quick succession.
Fixed some controller-related issues:
Players can now move right when viewing Expeditions with a controller.
Players should now be able to view profiles and access all the relevant options when playing on a controller.
Players should no longer get stuck in the Helmet selection in the Wardrobe when using a controller.
Various crash fixes
BALANCE CHANGES:
Increased the damage on the Shotgun primary fire
The health of To'raka’s invulnerability spheres has been reduced.
The health of Unglu’s Surgezones and Crystals has been reduced.
Increased the timer before the “sudden death” in To’raka’s secret phase and slightly lowered Toraka’s health during this phase.
The speed of the Elite Berserker has been reduced.
RichGetRicher - Reduced chance from 15->10 %
Slightly increased the timeframe to beat the Combat Bow challenge
Current Release
22292612
Uploaded May 19, 2026
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System Requirements
How to Install
RGame.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
4.5 GB
22292612
FB8E46F6
a290e7084b05440df854b10fbf69ef6b8ab77b4b3ce9979cd71e51c83e52c197
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Download Abyssus for PC with a direct link or via torrent. Get the full version of Abyssus for free. Abyssus is a Action released by DoubleMoose Games.