Nuclear Sub: Prologue

Nuclear Sub: Prologue

Mobilway S.A. · December 31, 2026 · Submarine, Cold War, Simulation, Naval Combat, Wargame

Nuclear Sub: Prologue is free to play — no purchase needed. We track it so you know if that ever changes.

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This game is free to play. Get it on Steam →

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Nuclear Sub: Prologue price

Nuclear Sub: Prologue is free to play — there is no purchase price, on Steam or anywhere else we track. We keep watching it, so if it ever stops being free the price history on this page will show when that happened and what it changed to.

About Nuclear Sub: Prologue

✦ AI summary

Nuclear Sub: Prologue puts you in command of a Cold War nuclear submarine, managing your crew's morale, reactor integrity, and combat tactics as you navigate hostile Arctic waters and complete tactical missions. Balance resource management with tactical warfare across a realistic 3-deck vessel where every system failure impacts your sailors' efficiency and your chances of survival.

Nuclear Sub: Prologue is just part of the gameplay that awaits you in the full version of the game.

Dive into the unique story of the nuclear submarine crew. The government sends its best armed and best tactically prepared undersea crew to face hostile units in the far depths of the cold North.

It seems that everything is already in place that would be needed for success, an excellent crew, a great ship, the only thing missing is a person who has the tactical sense to handle naval battles. You need to control the morale of the sailors, manage weapons and food supplies, and constantly check the technical condition of the submarine, especially its nuclear reactor. Will you prove yourself in this role?
Manage basic resources such as indoor oxygen levels and the correct functioning of the nuclear reactor. Monitor the availability of electricity and check if navigation and mechanical systems are working properly. The better the condition of the ship you provide, the happier the sailors will be and the more efficiently they will perform their tasks. Remember to keep morale high, but also don't forget the realistically represented hierarchy on the submarine directly contributes to maintaining order among the crew.
When going to deep waters with a nuclear submarine, you must remember to control its propulsion. A nuclear reactor requires constant attention and checking of its technical condition. If a malfunction occurs, close off the relevant parts of the ship to cut off damaged or flooded sections.
Explore the oceans of the open world, looking out for enemy units. Complete missions assigned by your superiors and assign tasks to your subordinates. Destroy enemy ships and raise the morale of your crew. A wide range of Cold War missile selections will allow you to win any battle of the many planned scenarios, and an advanced ship damage system will make the gameplay even more realistic.

Features:
- cold, open world of the North
- model of a 3 decks nuclear ship with realistically replicated separate compartments
- manage 80 sailors in the crew, who, thanks to artificial intelligence, behave accordingly to the level of satisfaction and good condition of the ship
- realistic ship damage system will supplement the gameplay with the necessary realism
- a campaign consisting of 10 diverse main missions and 20 side missions based on real scenarios
- possibility to upgrade your ship and equipment, thanks to the money earned for correctly completed missions
- Control your mission from different levels of view: TPP, FPP, map

Nuclear Sub: Prologue — game info

Platforms
Windows
Player modes
Single-player
PC Game Pass
Not included

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