Last Nuclear Darkness

Last Nuclear Darkness is a nuclear power plant simulation in which you operate a reactor, balance energy production and try to prevent catastrophic failures. You manage more than 200 parameters and 150 switches across the Control Room, Containment Building, Turbine Building and Cooling Towers, while an AI-powered Operational Assistant (AO) helps with procedures and crises.

Run the reactor

Monitor and adjust reactor power, coolant flow and steam generation to keep the plant operating. The reactor has nine fuel blocks, 72 control rods and advanced safety systems. Its chemical module includes boric acid dosing, ion exchange filtration and pH management; you also balance steam generation, coolant flow and energy output to avoid failures.

Equipment failures, floods and fires can require quick decisions and precise actions. You can use a tablet to manage reactor tasks, control AO and oversee operations from anywhere in the plant. AO assists with ignition protocols, alarm systems and crisis management, and you can upgrade its skills to unlock additional functions.

Objectives and resources

Daily objectives set energy production goals that earn Prestige and Experience Points. Leveling up unlocks more challenging scenarios. You also balance fuel consumption, maintenance costs and community demands to keep the plant running efficiently.

Prestige Points can be spent on upgrades, fuel blocks, protective gear and radioactive waste cleanup. Decisions can pit power output against safety, while changing systems and challenges make each playthrough different.

Plant and learning

You can explore the plant, from the Control Room to underground maintenance tunnels, accompanied by an atmospheric soundtrack. The game provides an in-game manual, but does not guide you through the mechanics with step-by-step tutorials; you learn through experimentation and research. It also presents the science behind nuclear energy.