Steam app 2773280 · updated 12 Sep 2026, 21:15 UTC
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.
718 hourly samples, with the daily peak drawn over them. Weekends are shaded.
19 months, March 2025 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 434 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 284 hourly samples. Each dip is a night. Weekends are shaded.
ANEURISM IV was released on 11 Mar, 2025.
This Game may contain content not appropriate for all ages. General Mature Content.
| Language | Full audio |
|---|---|
| English | ● |
| French | |
| Czech | |
| Russian | |
| Portuguese - Brazil | |
| Portuguese - Portugal |
A blank audio cell means full audio was not marked in the returned language list.
50 developer announcements, Aug 2024 to Aug 2026 · times in UTC
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…
Patch notesVersion 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…
Aaron | VellocetVersion 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…
Aaron | VellocetA 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…
Aaron | VellocetYou've waited patiently. Now it's time to deliver. Aneurism IV 19b Open Preview is live. Patch notes will be released when Open Preview concludes and the main branch is updated. Give it a shot, see how it feels, and provide your feedback in…
Aaron | VellocetDealernet Returns Dealernet has appeared once again on the terminals across Aneurism. It seems the Midnight Bloc is moving its operations slowly away from the public eye... Version 20 Update With these changes happening throughout the city…
Aaron | VellocetWe’ve seen the feedback. A lot of you have been frustrated with bugs, inconsistency, and systems not working the way they should. Which is fair. This update is focused on fixing those problems first, while also giving some small scale…
Aaron | Producer - Aneurism IVQuick Hotfix For Preview Branch. - Fixed tool claim booth - Added Smuggling Toolkit to Underground spawns Update your preview branch. Restart Steam if it's not updating.
Patch notesHow to Join the Preview Right-click Aneurism IV in your Steam library → Properties → Betas → select the public-preview branch. Restart Steam if the branch does not appear. v19a Preview 2 This build focuses on stability. Aside from…
Aaron | Producer - Aneurism IVStatus Update Our current priority is stability for v19a. We’re addressing a large number of bugs before pushing further gameplay changes or new content. We’re also reviewing broader progression and feedback loops tied to gameplay systems…
Aaron | Producer - Aneurism IVIf you’re reading this, you’ve probably been very patient waiting for an update… and the good news is: we’ve actually got some good news for you.One year ago, the nightmare began when ANEURISM IV opened its gates to the grand public. What…
vellocetAdditionsAdded Stealing mechanic (yes it also works on rations, and yes you can kill thieves without penalty) Added RP animations (Bound to F1)Added Christmas joy Added voice chat volume slider to settingsAdded FOV slider to settings…
vNateGood evening fellow aneurites! We come to you this evening with a very small but very important patch. Yes, sometimes the most boring patches take the most time...On the bright side, this will make relayed servers great once more.We'd also…
Patch notesChangelogAdditions\ Gave the Dealer a radio to communicate with scumbagsAdded waypoints to NeurostabilizersImprovementsSepsis now deals damage proportionate to max healthDarkness can only come every 30 minutesSignals can only rot if all…
Patch notesChangelogAdditionsAdded Dewormer which spawns in underground loot nodes to aid the parasite epidemicAdded mine undergroundImprovementsImproved postprocessing effectsImproved lightingDecreased property prices (includes commercial and…
Patch notesAre you ready to suffer like never before?Because for the last few months, we've been suffering around the clock to bring you the biggest update since ANEURISM IV opened its gates in March. New jobs, new cosmetics, new weapons, and tons of…
vellocetCitizens of ANEURISM IV! Take a moment to enjoy the Cortex's latest propaganda piece courtesy the very talented Fistoos.We return earlier than expected with a simple housekeeping update, which suddenly turned into a slightly more…
vellocetCitizens of ANEURISM IV, we present to you version 16b!ChangelogNew featuresAdded 7 new cosmeticsAdded global chat (/// prefix) which is disabled by default and can be enabled on community serversAdded radio chat (// prefix) as an…
vellocetHello citizens,It's been a while since the last announcement... and that’s because the Vellocet crew has been heads-down, working like maniacs on a ton of new stuff!We’ve always prided ourselves on transparency with the team, so here’s a…
SleggieImprovements and Additions Food stands are now persistent through restarts Credits gained from paystations are now persistent through restarts Owners/Managers of a shop may now send credits to their ATM for paycheck redemption and…
Patch notesThe Midnight UpdateCitizens of ANEURISM IV, have you heard of the Midnight Bloc? They've just settled in ANEURISM IV and have revolutionized business as we know it.Heads‑Up on what’s nextVersion 16 is the opening move in Aneurism’s biggest…
SleggieProletariates, the Cortex has approved this message for immediate transmission. Standby for broadcast. Hey guys, our lead developer is away for a while and so new content is going to be cooking for a little longer. In lieu, Vellocet…
AyAyRonNew ContentAdded second forge in P.L.F. Metalworks 1.ImprovementsAdded proportional/scaled contribution rewards at loading bays.Lightmap improvements.Resource node spawn points are now higher.Nerfed Bile Binty firerate.Bug FixesFixed…
Patch notesGreetings citizens of ANEURISM IVWe are excited to announce a monumental update, one that will restore balance and order to the world of ANEURISM IV. We all know that work is reward, so it is with great anticipation that we present to you…
SleggieProletariats, welcome back. Very simple announcement to keep our steam community up to speed- Attacks have halted, and we are going to be undergoing investigations into these bad actors and malicious attackers (butthurt cheaters). Servers…
AyAyRon{STEAM_CLAN_IMAGE}/44970972/5a2b0096b5da6a4851e0a81ca9f3c235c50776b4.png Good evening, Proletariats. We've given a lot of information on our discord about the recent problems, but we'd like to address them here to our community that may not…
AyAyRonCitizens of ANEURISM IV! This may look like a routine update, but don’t be fooled. While we’re always working on fresh content behind the scenes, stability remains our top priority. What seems small on the surface is actually a big step…
SleggieGreetings proud workers. For the past few weeks, we've been working on lots of new content. Many have asked for a roadmap, but the truth is we don't know when what is coming. All we know is that a lot of good stuff is coming — from the…
SleggieGreetings citizens of ANEURISM IV. We bring to you today a super tiny but important patch. Bug fixes Update Steamworks for better Proton & Windows support. This in theory should solve the empty server browser issue. Attempted to fix rare…
Patch notesCitizens of ANEURISM IV, stay alert. The Cortex has seen a critical surge in rot levels. Unfortunately, the Rotter's Update took a bit longer than expected. It turns out that a few of the "developers" got sick, and one was even transformed…
SleggieBug Fixes Fixed issue where some players would get disconnected randomly. Fixed Corpsman spawning with incorrect pants. Fixed stacked postprocessing effects.
Patch notesNew Content Added a new cosmetic: Hemobottoms. Added new Scum Chests to the underground. Added a "Sense" status bar to track progress to next anamnecyte. Added Combat Juice to Cortex armory. Improvements Adjusted Scumbag filter and Corpsman…
SleggieThe Fabric of Society update introduces a cosmetic system with 45 new garments to drape over your hollowed-out husk—because if society’s crumbling, you might as well look decent on the way down, right? More importantly, we’ve finally solved…
SleggieBug Fixes Fixed server browser occasionally not responding. Fixed ragdoll forces not applying on death. Fixed incinerator not despawning bodies. Fixed transition and connection related bugs. Fixed connecting to passworded servers. Fixed…
Patch notesCitizens of ANEURISM IV, We return with another essential patch! Though this update won't magically resolve all the netcode woes we've been battling, it's crucial for us to push out incremental improvements and fixes as quickly as we can.…
SleggieBug Fixes Fixed players not being able to join certain servers. Fixed a bug where players couldn't respawn. Fixed warplanes not showing for late joiners. Improvements Optimized all entities by lowering the update rate of identifiers.…
SleggieCitizens of ANEURISM IV, we bring to you a small patch. For all those experiencing latency issues, we are continuing to work very hard on getting them resolved as soon as possible. Thank you for your patience. Bug Fixes Fixed health-related…
Patch notesNew Content Added a new job: the distillery. Added alcohol. Added cult hideout. Added two new tunnels connecting the greenhouses to the club. Added a supplier to metalworks so citizens with good karma can obtain a pipe. Added new muzzle…
SleggieCitizens of ANEURISM IV, The Consul is thrilled to witness the excitement and enthusiasm you've shown for ANEURISM IV! We, the proud workers behind this unique project—the dev team—are deeply grateful for your continued interest and…
SleggieCitizens of ANEURISM IV, the first patch is already here. Thank you to everyone for sharing your feedback and alerting us of all the pesky little bugs that still need fixing. As we work on the next major content update, we couldn't stop…
Patch notesCitizens of ANEURISM IV, heed the voice of the Cortex! We’re thrilled to see so many of you diving deep into the world of ANEURISM IV. Your excitement fuels our passion, and we're eager to enhance your experience further. Thanks to your…
SleggieNew Content Added new weapon: Lung Puncher. Added new weapon: Kidney Splitter. Added new fate: Sanitar. Added wartime event. Redesigned wartime factory. Added advanced gun parts. Added many new telescreen broadcasts. Updated the memorial to…
SleggieWe'd like to thank those who helped us build and test this update. It wouldn't have been possible without you! Added Added logging to the admin menu (deaths, fate changes, connections, etc) Holding left control and clicking on a player's…
SleggieAdded Added server location flags (manually configurable). Added admin menu. Added optional report system for community server management. Added ranks for community server organization. Added "^" keyword for targeting self when using…
SleggieAdded More curse images and sounds Vault doors to access the underground A new craftable item: the hijacker (antagonists only) Localization for Czech, French, and Russian (50% complete) A minimum number of players threshold to rot the game…
SleggieRemade the entire map. Added more properties. Added more underground entrances. Added more soundscapes, ambience, and reverb zones. Merged all sectors together and removed the metro. Improved light probes for better lighting of non-static…
SleggieProletariats, the Cortex has issued an immediate change to the isolation status of our district. Standby for transmission. Hello! Thank you for your patience, once again, we're back with some more updates to provide as part of v0.3.6, we're…
AyAyRonNew features Industrial sector. Server-side handling of movement. Community servers. Audio occlusion. Ration factory. Greenhouses. New Cortex indication UI. Metro/transit pass. Lighters for Scumbags and Zealots. Skull sterling currency.…
SleggieProletariats, the Cortex has issued an immediate change to the isolation status of our district. Standby for transmission. Hello! Thank you for your patience, once again, we're back with some more updates to provide as part of v0.3.6, we're…
AyAyRonProletariats, the Cortex has issued an immediate change to the isolation status of our district. Standby for transmission. Hello everyone! We're back with some more updates to provide as part of v0.3.5, we're very excited to share these…
AyAyRonWhat Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | ANEURISM IV.exe | windows | ||
| Launch | ANEURISM IV.app | macos |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG