About the Game
The Next Generation of Naval Combat
Command the most advanced nuclear-powered submarines in the world. Modern Naval Warfare is the ultimate tactical simulation, offering unparalleled depth in graphics, physics, and authentic combat systems. From the pressure-crushed depths of the ocean to the high-stakes politics of the South China Sea, every bolt, frequency, and sonar ping is simulated with uncompromising detail.

Unrivaled Visual & Atmospheric Fidelity Experience a world built on real-world GIS data. The simulation's physically-based rendering (PBR) and world lighting create a breathtaking environment, from the curvature of the Earth at high altitudes to the shimmering caustics and reflections on the ocean surface.
Volumetric Clouds & Dynamic Weather: Navigate through GIS-assisted weather conditions and a multi-layered spectral wave system.
Authentic Interiors: Explore accurate 3D representations of the Virginia class (Blocks I-IV) CIC with fully clickable, feature-complete control stations.
Living World: Engage with digital twins of modern military and civilian platforms, including dynamic civilian traffic assisted by GIS-AIS data.
Advanced Acoustic & Physics Simulation In the silent service, sound is your only sight. Our 3D sound propagation model calculates transients, flow noise, and individual component sounds (engines, pumps, propellers) in real-time.
Real-time Signal Analysis: Utilize FFT analysis for Narrowband, LOFAR, and DEMON applications, modulated by specific sonar array characteristics.
Physical Realism: Every object follows real-time hydrodynamic and hydrostatic calculations. Weapons movement, explosions, and even material reactions to underwater pressure are physics-based.
Damage Control: Face hi-fidelity damage modeling and volumetric flooding based on true shipbuilding concepts like permeability.
Sophisticated Systems & Weaponry Take control of a wide spectrum of military-standard sensors, including RADAR, SONAR, and EO/IR.
Electronic Warfare: Experience RF signal propagation affected by wavelength, line-of-sight, and antenna configuration.
Lethal Arsenal: Deploy torpedoes, multi-stage missiles (with individual stage envelopes), and mines.
Countermeasures: Defend your boat with noisemakers, sonar decoys, chaff, and flares.
Navigation: Use INS, GPS/GNSS, Tercom, and DSMAC for precision strikes.

Step into the role of various crew members with native-language station interfaces:
Pilot Station: Control depth, speed, course, trimming, and masts.
SONAR Station: Manage Broadband, Narrowband, Active Intercept, and Tactical Decision Aid.
Fire Control: Utilize advanced TMA (Target Motion Analysis) with interactive rulers and mission planners for Harpoon and TLAM missiles.
ESM & RADAR: Intercept threats and monitor AIS signals to maintain situational awareness.

Whether you are a lone wolf or part of a strike group, the world is your battlespace.
The Technothriller Campaign: A massive 18-mission campaign set in the South China Sea.
Diverse Operations: Engage in Anti-Submarine Warfare (ASW), convoy hunts, special forces insertion, and espionage.
Training & Editor: Learn the ropes with a 3-mission training sequence or create your own challenges with the built-in quick mission editor.
Screenshots
13 images
Version Information
Steam Patch Notes
Official update history
Following our launch into Early Access, we want to thank everyone for the continuous stream of constructive feedback.
In our previous update, we stated our plan to deliver the first technical update in the second half of June. We are still planning to do so, but wanted to push a hotfix to address some of the biggest issues from release.
This update addresses several game-breaking stability issues, refines core simulation systems, and introduces initial UI/UX improvements based directly on your feedback.
Below is the complete list of fixes and features included in today's build:
Fixed Issues
Critical Stability & Logic:
Fixed a game-breaking error (NullReferenceException) that occurred during certain actions in Blocks 1 & 2 when utilizing the TMARuler.
Fixed a critical crash triggered when the submarine surfaced with the snorkel raised before completely breaking the surface.
Resolved an issue where training torpedoes would remain stationary and unresponsive in the water after being fired.
Optimized production builds by removing unwanted internal testing components (such as SSH clients).
Mission & Simulation Corrections:
Fixed multiple bugs causing the player to spawn at incorrect depths during Quick Mission setup.
Corrected objective triggers to properly differentiate between primary and secondary objectives, and fixed target hit registration issues on Mission 1.
Sensors & Visuals:
Fixed over-the-horizon visual calculation issues regarding earth curvature viewing for ship hull rendering and Photonics "Mono" camera extreme range visibility.
Verified and restored proper sonar operations on Block 4, and corrected the waterfall component setup for the DEMON display on Blocks 1, 2, and 4.
UI/UX & Audio:
Added selectable depth alarms to the pilot auxiliary displays to enhance station awareness.
Fixed audio logic to stop the Active Intercept chirp sound from playing continuously when signals are stale.
Known Issues
We are actively tracking the following verified issues and working on solutions for our upcoming updates:
Submarine Steering: In certain scenarios, after multiple attempts to follow a plotted course, the sub can become stuck on a heading that cannot be changed.
Autopilot & ECDIS: Deleting a route while the autopilot is active can temporarily lock you out of course changes. Entering specific values in the ECDIS coordinates field can cause it to become unresponsive.
Audio/Visual: Radar mast 3D models might not visually appear raised on Blocks 1, 2, and 4 (the radar functionality itself remains active). Explosion sounds are currently not registering on Sonar displays.
Moving Forward
Our commitment to expanding Modern Naval Warfare remains our top priority. We are continuously monitoring your feedback as we polish core features and move forward towards release.
Please keep sharing your logs, system specs, and bug reports on our official forums and Discord.
[dynamiclink href="https://store.steampowered.com/app/1816640/Modern_Naval_Warfare/"]
The wait is over. Modern Naval Warfare has officially launched into Early Access today.
Your command of the world's most advanced nuclear attack submarine begins now. Because this is a sophisticated, high-fidelity simulation, we want to ensure you have the ultimate tactical advantage to navigate (ah!) the complexities of the deep. Below, you will find a structured, comprehensive set of official resources—ranging from video tutorials to live-updating manuals—designed to take you from a fresh recruit to a master of the sonar waterfall.
Before diving into the complexities of this unparalleled simulation, check out our article here.
1. Tactical Training Videos
For those who prefer visual briefings, we have partnered with FPSChazly to produce a series of in-depth training tutorials. You can access these directly from the in-game menu or via the official playlist.
2. The Digital Library (Live Updates)
Our documentation system is live-updated. When you open a manual from within the game, the system automatically checks our public server and caches the latest version locally. This ensures you always have the most up-to-date tactical data without waiting for a Steam patch.
You can browse the full public repository at any time here.
Available Now:
MNW Control Guide: A vital breakdown of the overlay UI, buttons, and primary command inputs (recently updated based on community feedback).
Virginia Class Quick Reference Handbook (QRH): Your "go-to" for step-by-step procedures, weapon launch parameters, symbol explainers, and performance envelopes.
Dusk till Dawn Campaign Charts: Essential mission intelligence, including satellite imagery, bathymetry, and bottom composition for sonar modeling.
Virginia Class Blueprints: Technical schematics detailing the structural differences between the various Blocks of the submarine.
Weapons Blueprints: Vital performance specifications and employment limitations for your torpedo and missile complements.
Recognition Handbook: A massive resource featuring diagrams, specs, and acoustic data to assist with LOFAR and DEMON sound analysis and radar classification.
Coming soon:
The MNW General Guide: A foundational deep dive into the history of submarine warfare and the physics of the underwater environment.
Virginia Operations Handbook: A detailed station-by-station guide. The initial release focuses on the Block III (featured in the campaign), with expanded coverage for all Blocks and advanced tactics coming throughout Early Access.
Our advice, if you can, is to always keep the QRH open on a second monitor or tablet. It’s designed to be your best friend during high-stress encounters when you need to verify launch parameters in a hurry.
Good hunting to all of you.
Current Release
23345700
Uploaded May 28, 2026
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System Requirements
How to Install
Launcher.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
12.8 GB
23345700
67CA1D50
40f3a0b6184143c895fb5502790ed7a4843c01e9559de4ebb5b19be149ef7cb9
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