Design. Detonate. Survive. As the Chief Engineer of the Kurchatov Institute, you must design atomic devices to satisfy the demands of the State. A hardcore physics-based puzzle game simulating hydrodynamics, neutron transport, and thermonuclear fusion.

NUCLEAR DESIGN BUREAU is a hardcore sandbox engineering game where you design and test nuclear devices.You are the Chief Engineer of a secret Soviet design bureau. The State gives you a target and a warehouse full of dangerous materials. In some directives, your available materials are limited. Your task is simple: build a device that gets the job done.HOW IT WORKS- Receive Directive: Read technical mission requirements and constraints, including material limits in specific directives.- Design: Paint materials directly onto the blueprint grid. Build your primary, casing, and supporting systems.- Simulate: Hit the red button, run full detonation physics in real time, and watch the blast in the detonation viewer.- Refine: If it fizzles, fails, or wastes material, iterate and improve.CORE FEATURES- Physics-Driven Simulation: Shockwaves, heat, radiation, and chain-reaction behavior are modeled in real time.- Detonation Viewer: Observe detonations as they unfold, with live visual feedback on blast behavior.- Campaign Directives: Structured mission progression with technical goals and constraints.- Sandbox Mode: Unlimited experimentation with full design freedom.- Iterative Engineering Loop: Build, test, diagnose, and optimize.EARLY ACCESS STATUS (CURRENT BUILD)The current Early Access build is fully playable and includes the core gameplay loop:- Design -&gt; Simulate -&gt; Refine- Sandbox mode- Campaign directives- Save/load systems with ongoing stability improvementsThis is an active development build. Expect balance changes, physics upgrades, and campaign iteration during Early Access.EARLY ACCESS ROADMAP (SUBJECT TO CHANGE)Physics and Simulation- More realistic detonation viewer (better shockwaves, 3D-style presentation, damage radius + thermal radiation modeling, destructible buildings/targets)- Smaller grid mode for higher realism- Improved compression physics- Levitated pit physics- Fission boosting with D-T gasCampaign and Content- Rebuild and expand campaign around updated grid, physics, and destruction systems- Many more directives/missions- Voiced campaign- Additional bomb concepts (high-radiation designs, clean bombs, neutron bombs)- More advanced materialsPresentation and Audio- More music tracksCommunity and Meta- Public leaderboardDEVELOPMENT APPROACHEarly Access is where this game gets shaped in public. Player feedback will guide balancing, campaign pacing, clarity, and polish as we move toward full release.&quot;The atom is not a soldier, Comrade. It is a force of nature. We merely tell it where to go.&quot;

Good Game Database

Nuclear Design Bureau Achievements