Steam app 1603940 · updated 12 Sep 2026, 23:59 UTC
Nuclear war simulator is a detailed realistic simulation and visualization of large-scale nuclear conflicts with a focus on humanitarian consequences. It lets you design conflict scenarios and estimate the consequences using a population density map and realistic weapons effects.
170 hourly samples, with the daily peak drawn over them. Weekends are shaded.
44 months, February 2023 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.
15 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
22 days as the curve, each the highest figure that day. Behind it, 105 hourly samples from 17 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
10 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
Nuclear War Simulator was released on 2 Feb, 2023.
| Language | Full audio |
|---|---|
| English |
A blank audio cell means full audio was not marked in the returned language list.
28 developer announcements, Sep 2021 to Sep 2026 · times in UTC
Home of Wargamers 2026 is almost here. Our yearly live showcase, streamed on Twitch and YouTube, returns on September 30th with fresh announcements, updates and a look behind the scenes at what's coming from Matrix Games.This edition brings…
sofia.cHello Nuclear War Simulator fans. Episode#5 of our video series is now out. This time, we explore the systems designed to detect and stop ballistic missile threats before impact. From early-warning satellites and radar detection to missile…
danamiteBuild 418New features and changes:the number of injured people is calculatedtotal casualties (fatalities + injuries + fatal cancers) are calculatedexpanded the display of results of the simulationthe area and volume of the destroyed…
danamiteHi everyone, Update v1.00.0415 has been released. NOTE: Initially this patch released with incomplete patch notes, below is now the complete listBug fixes and minor improvements: fixed: cancer rate was hard-coded. Now it will be used from…
Patch notesThe Meyer update is out now for Nuclear War Simulator. Last week we revealed the major features in Dev Log #6 The Meyer Update. With this major update a Campaign mode has been added. These missions introduce new mechanics that increase in…
Severus LupusDev Diary: The Meyer Update The upcoming Meyer update represents a significant milestone for the Nuclear War Simulator, introducing a range of enhancements designed to deepen its educational impact while delivering a more refined and…
Severus LupusNuclear War Simulator has a Beta live for our next update. The Meyer update will see a Campaign mode with missions and objectives added to the game, along with a scenario creation wizard, improvements to the radiation model, and bug fixes.…
Severus LupusWe are proud to announce our new Home of Wargamers live event, which will take place on September 26th at 5 pm UK time. Join us on our Twitch channel to know more about our biggest franchises. You can set a reminder here. We will talk about…
sofia.cHello Nuclear War Simulator fans. Episode 4/6 of our video series is out now. This episode explores the damage nuclear weapons do indirectly. While the explosion, blast, and fireball have the capacity to destroy cities, fallout can destroy…
Severus LupusNuclear War Simulator's fallout model has been used in a scientific study commissioned by Princeton University. The Missiles on Our Land Project has utilized the NWS fallout model to track the different ways seasonal winds could effect the…
Severus LupusOur third episode of the Nuclear War Simulator video series is now out. This time we cover the actual effects of nuclear weapons as they detonate. From the shock-wave to the thermal radiation, we go over the apocalyptic implications of a…
Severus LupusWe are proud to announce our new Home of Wargamers live event, which will take place on September 12th at 5 pm UK time. Join us on our Twitch channel to know more about our biggest franchises. You can set a reminder here. We will talk about…
giuliac1994A new update is available for Nuclear War Simulator. Along with bugfixes, new features include a data layer for average building heights, which will improve the accuracy of modeling damage to an urban environment. Build 399 New features and…
Severus LupusHi everyone, a new update has just been released. Many many fixes and improvements! Build 394 New features and changes: - new buttons with text in the main UI overlay - added a name field to units - default blueprints and blueprints from…
Patch notesHi everyone, a new update has just been released. Build 391 New features: - blueprints of any country can be used by any other country in the placement panel, surface objects. This will make it much easier to give nuclear weapons to…
Patch notesToday we are going to release a new update Here is the changelog: New features: - attack planer: in the counter-force targeting tool, when adding selected units, all added units will be selected by default, making the targeting easier Bug…
Patch notesHi everyone, the first update since the release is live! This update will solve a number of issues, especially for everyone who has problems calculating fatalities. Build 389 New features: - added an option to define a custom grid span for…
Patch notesNuclear War Simulator Out Now Nuclear war simulator is a detailed realistic simulation and visualization of large-scale nuclear conflicts with a focus on humanitarian consequences. It lets you design conflict scenarios and estimate the…
Roby7979Nuclear War Simulator - Dev Log #5 {STEAM_CLAN_IMAGE}/40703454/7cefba5910b3b23ebaa66d649487c145f7ef9378.jpg Individual humans Simulating the effects of nuclear weapons on individual humans The nuclear war simulator can be used to simulate…
Roby7979Nuclear War Simulator - #4 Dev Log {STEAM_CLAN_IMAGE}/40703454/3b72fc79e1cde871ac6f525fd78b76d1972bc25b.jpg Delivery systems The Nuclear War Simulator includes a number of modern nuclear weapons delivery systems. It simulates the most…
Roby7979Nuclear War Simulator - #3 Dev Log {STEAM_CLAN_IMAGE}/40703454/576cab588e6804522a3538495f85854df804099b.jpg AI The Nuclear War Simulator can be controlled entirely by the user and also includes an AI that can control a country to launch…
Roby7979Nuclear War Simulator - #2 Dev Log Objects database Database of weapons and delivery systems The Nuclear War Simulator allows you to create detailed scenarios with full control over every detail of the objects deployed on the map. You can…
Roby7979Nuclear War Simulator - #1 Dev Log - Scenarios and Mods {STEAM_CLAN_IMAGE}/40703454/6da7dd684c3d52640bcecdb128574d9bb5e951f2.jpg Scenarios The Nuclear War Simulator includes a number of scenarios that are very easy to use. If you are new to…
Roby7979Attack plan trajectories visualization It is now possible to visualize the trajectories for a selected attack plan (in the attack planer menu) {STEAM_CLAN_IMAGE}/40703454/817d952e25a03f5c2fa8904af16f1f7e0f9e5e8d.png - white: ballistic…
ivan.stepanov.nwsMoving human individuals, time-resolved fallout Human individuals can now move on the map and radiation dose from fallout is calculated and displayed in a time-resolved fashion. Civil defense situations and other aspects of survival after a…
ivan.stepanov.nws- Bug fix: increased the country index map resolution to match the resolution of the population density map. This should eliminate some of the fatalities counting inconsistencies in small countries - Bug fix: fixed two errors in the…
Patch notesEscalation scenarios generation tool The old scenario generation tool was greatly extended to quickly create scenarios with multiple escalation steps. The UI has options to set the escalation dynamics: - number of escalation steps - time…
ivan.stepanov.nwsThis update includes a number of new core features and numerous minor improvements. HYSPLIT-based fallout model HYSPLIT is a detailed particle transport model that can be used for fallout deposition simulation. A HYSPLIT-based fallout model…
ivan.stepanov.nwsWhat Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | launcher.exe | any |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
WinMyDocuments | My Games/Nuclear War Simulator/Blueprints | * and below |
WinMyDocuments | My Games/Nuclear War Simulator/Human_Individuals | * and below |
WinMyDocuments | My Games/Nuclear War Simulator/Object Groups | * and below |
WinMyDocuments | My Games/Nuclear War Simulator/Saves | * and below |
WinMyDocuments | My Games/Nuclear War Simulator | *.JSON |
WinMyDocuments | My Games/Nuclear War Simulator | input.xml |
WinMyDocuments | My Games/Nuclear War Simulator | modioAuthenticationToken.txt |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPaythanks-kintaro@outlook.com0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG