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Watch trailer on Steam ↗ANEURISM IV
Vellocet · Published by Vellocet · Official site ↗
Content notice: This Game may contain content not appropriate for all ages. General Mature Content.
Mostly Positive — 75% positive (6,308 reviews)
Last updated 28 Sept 2026
A dystopian simulator where your choices shape a decaying city. Join other players to protect the metropolis from ruin, hasten its downfall, or simply work in the factories. With no set goals or rules, every action has consequences in a world teetering on the brink.
£8.50
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Price history
Action, RPG, Simulation · 2025 · More £5 - £15 games
In ANEURISM IV, shape the destiny of a decaying city as you play with or against others in this 2025 action-RPG from Vellocet. Every decision you make impacts the world around you in a simulation where nothing is set and everything has consequences.
About this game
Enter ANEURISM IV, a sprawling metropolis where the proletariat works without question and the air is thick with decay. As a Spirit—a spectral entity on the verge of becoming flesh and bone—you stand at a crossroads. The city is yours to influence, disrupt, or simply observe. With no set goals or rules, how you engage with this world is entirely up to you.
From the hardworking Prole to the affluent Banker, each fate offers unique abilities, challenges, and ways to interact with the city and its inhabitants. Your choice defines your journey:
Align with the Cortex to stabilize and protect the city.
Join the Scumbags or Zealots to spread the Rot and sow chaos.
Remain Neutral and immerse yourself in daily life, working in factories or exploring the city.
An ever-present threat, the Rot visibly alters the city as it spreads. Roles like Liquidators and Scumbags are pivotal in either containing or exploiting this menace. If left unchecked, the Rot will consume everything, leading to the city's demise.
A Living, Breathing City
ANEURISM IV is a sandbox simulator first and foremost. The city reacts dynamically to player actions:
Take Down the City: Collaborate with others to bring about the city's downfall and witness its reset.
Protect the City: Work to maintain order and keep the Rot at bay.
Live Your Life: Engage in everyday activities or carve out a unique path—it's your choice.
Survival depends on your willingness to work. Earn credits by taking on various jobs—labour in factories, manage resources as a Prole, or manipulate finances as a Banker. These credits are your lifeline, allowing you to purchase necessities from shops, trade for valuable goods, or invest in property.
No Rules, Only Consequences
In ANEURISM IV, there are no rules dictating your actions. Every decision you make impacts the city and its inhabitants. Will you bring stability or chaos? The choice is yours.
Key Features
Total Freedom: No imposed objectives. Play your way.
Dynamic Consequences: Every action influences the world around you.
Multiplayer Interaction: Invite friends to join your world—collaborate, compete, or coexist.
Survival Mechanics: Manage your nourishment and sanity in an oppressive, ever-changing environment.
Activities
Wait for rations
Craft goods
Rent property
Listen to the radio
Work in a factory
Do laundry
Earn credits
Pay taxes
Evade the Cortex for tax evasion
Go insane
Eat suspicious things
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10
- Processor: Intel Core i5-7400 CPU @ 3.00GHz
- Memory: 8 GB RAM
- Graphics: NVIDIA GForce GTX 1050
- DirectX: Version 11
- Network: Broadband Internet connection
- Storage: 2 GB available space
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
Version 20 Open-Preview
Due to the backend overhaul being so major with complexity, along with Nexus and the amount of time that went into implementing these systems, we decided to ship this as Version 20. What is Nexus? Nexus is our in-house game statistic reporting, and fair gameplay enforcement system. Additions Supermax: Added Nexus system Support Sites Are Dead: Added in-game report system for official servers (Players can now be directly reported through the player list)Power To The People: Most game settings are now configurable by server operators. View documentation at https://developer.vellocetsoftware.com/wiki/ANEURISM_IV MOTD: Added "news feed" to main menuNo Longer The Favorite: Added "Delete from favorites" button to server browser ChangesRespect Authority: The value of neutral fates is now directly correlated to their productivity in the eyes of the Cortex. Bare Necessities: Hunger, thirst, and sanity values are now persistent across lives (30% minimum on new life) Disruption & Cleanup: Destroying components during wartime will result in loss of anamnecytes, destroying components after wartime is finished will result in anamnecyte gain Sigma Grindset: Bankers now receive sense (anamnecyte gain) for completing banking transactions Fixes/OptimizationsImproved server browser responsiveness Experimental performance/stability fixesFixed Rogue not leveling to Rank 6Fixed Malpractitioner not leveling to rank 5/6 Fixed GUID issue with item stands Last But Not Least: To join the Open Preview: Aneurism IV -> Properties -> Game Betas -> Public Preview Update, if update doesn't occur, restart Steam and try again.Read full article on Community Announcements (Aaron | Vellocet)Patch NotesOfficial
Version 19b.2
Adjusted armory ranks for arbiter Sprint should drain all the way nowNeurostabilizer destruction/repair gives now gives 160% Fix muscle Ripper flash Potentially Fixed PTT not triggering in certain situationsLimitators should now be able to crouchFixed stealing prompt not appearing correctly Limitators size adjustmentsRead full article on Community Announcements (Pristine Theatrics)AnnouncementsOfficial
Version 19b: Return to Form
Version 19b Welcome to a new era of Aneurism IV. A quick thank you to everyone who participated in the Open Preview and helped us test the update. Your time and effort were crucial in giving us what we needed to make this update the best it can be. Aneurism IV has had a LOT of iterations when it comes to balancing and overall changes. After extensive testing, this is what we've come up with. For the in-depth details, you'll just have to give it a shot! Major Changes Anamnecyte Acquisition Your pay is changing! After the correction of some slight clerical errors, the distribution of Anamnecytes has been reduced to a more stable rate. Most sources have been reduced, then given proper inspection to ensure that work is rewarded appropriately. {STEAM_CLAN_IMAGE}/44970972/48ac48157147eb48a80774a062b62c8d7a206a8e.png Art by Kodahonk Karmic Retribution The weight of sin is heavy, and those who commit atrocities in our great city will not be tolerated. If someone murders too many innocents, they themselves will die for their crimes. This also comes with adjustments to teamkilling to minimize the ability for players to kill their comrades. {STEAM_CLAN_IMAGE}/44970972/7e5c0d17b8ec9feddad0720fc8a513f98380aa19.png Art by MUTT The Return of Dealernet Shops have been given significantly more freedom. Dealernet has returned, offering exclusive access to exotic goods to those with ties to the Midnight Bloc. As a result, the Night Market has been adjusted to offer a wider range of basic goods. Additionally, the Food Stand has been replaced with the more spacious Item Stand, which can contain any goods and display them for any passerby to see. The Pay Station has also been converted into a place for money management. Just make sure to keep unwashed hands away from its contents... {STEAM_CLAN_IMAGE}/44970972/ea64f5037038b9dfd9f9fb1edf7dd2eebf81bf61.png Art by woahbunch Full Changelog But we're not done yet! We've got an onslaught of other changes, both big and small. Loot & Economy Rei...Read full article on Community Announcements (Aaron | Vellocet)AnnouncementsOfficial
Version 19b-Open-Preview-3
Version 19b Preview 3 Changes Increased efficiency of repair kits Fixed cremator sprint audio bug Fixed Limitator spawning at Casino (Nightmare) Adjusted loot system (again) (much better this time) (hopefully) Swapped Arbiter and Conciliator in CTX Armory Fixed a condition where limited players had no limit boxes Removed buffs from dumpster rats Glory to Bankerism IV. ----- How to join Preview: Right Click "Aneurism IV" in library - Click Properties - Game Versions & Betas - Select "public preview" - Update game - ProfitRead full article on Community Announcements (Aaron | Vellocet)AnnouncementsOfficial
Version 19b-Open-Preview-2
A second preview has entered the station. Version 19b Preview 2 Changes Fixed ghost player bug (hopefully this time) Slightly increased fist range Adjusted filters Added a "Eye strain filter" setting in the calibration tab Improved Nightmare lighting Halfed trash max loot space for dumpsters, bins Doubled loot spawn time Weapon damage adjustments Lowered damage resistance visual effects Added repair kits to dealernet Adjusted loot spawns Gave sanitar two small repair kits in loadout Added additional collision logic Fixed mines door (Nightmare) Adjusted fate costs (Notably, Scumbag and Controller are now both 5 anamnecytes respectively) Adjusted karma handling Lowered anamnecyte requirements for rank up (Primarily for Cortex, Rogue) Miscellaneous balance adjustments Everything is still a work in progress, thank you for testing the public preview branch(es). A big thank you to our community testers as well! To join open preview: Instructions to join Open Preview: Right-click on Aneurism IV in your Steam Library. Select Game Versions and Betas. Select public-preview. Ensure your game has updated. If it hasn't, select Verify Integrity of Game Files under Installed Files. Preview servers will be online for three days.Read full article on Community Announcements (Aaron | Vellocet)
