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Sunless Sea: Zubmariner (PC cover
Game Box forSunless Sea: Zubmariner (PC)

Sunless Sea: Zubmariner PC

A DLC for a well-received production by Failbetter Games that combines elements of strategy, adventure, and roguelike RPG.

This is Sunless Sea expansion pack.

RPG | steampunk | roguelike | 2D

Sunless Sea: Zubmariner Release Date PC


developer: Failbetter Games publisher: Failbetter Games Official website

English language game language: English

Games similar to Sunless Sea: Zubmariner

FTL: Faster Than Light

Sunless Sea


Sunless Sea: Zubmariner for PC is the first expansion to the well-received Sunless Sea. The add-on does not introduce any revolutionary changes, so our task is to explore the eponymous underground water and to explore its mysteries as well as experiencing the non-linear story.


Sunless Sea: Submariner tells a completely new story that takes place in a steampunk universe. Yet again, the players assume command over a special steam submarine, and their task is to explore the eponymous underground sea. Like before, visiting ports opens paths to new storylines. This time around, though, they are located not only on the surface but also under the water which is directly reflected in the behavior of their inhabitants.


Similarly to the vanilla game, the core of Sunless Sea: Zubmariner is exploration of the underground sea. While playing, the crew of the player’s submarine encounters not only the old, well-known object and creatures—this time, they come into contact with sea monsters (zee-beasts) or, for instance, coral reefs that glow in the dark. The latter can help us in exploring the sea depths by serving as an additional light source (the reflector mounted on the submarine is still our basic tool) as well as to indicate direct danger to the vessel and its crew. In the game, there are creatures that can effortlessly annihilate a submarine. One of them is Thalatte which huge mouth can swallow an entire ship.

The story told in the expansion develops mostly in ports. This time around, though, such locations are found under the water, as well, but their inhabitants behave somewhat strangely (at least to someone from the surface). Some of the hide from the submarine’s crew, the insane ones can even attack the player’s subordinates. The course of the story, which is expanded with new themes, as well as its conclusion is depended on the player’s decisions again, and the key role in a mission’s success is played by our relations with other crewmates. The fact that the action takes down on a new, lower level of the sea has an influence on the game. The player has to incessantly control the level of oxygen that the crew has as well as to carefully observe the sonar’s indications that points both to places of interest and to potential dangers.

Technical aspects

Sunless Sea: Zubmariner for PC is powered by the technology of the vanilla game. Compared to the original, the graphics remain largely unchanged, similarly to the system requirements.

Game mode: single player  

Age restrictions Sunless Sea: Zubmariner: 16+

Sunless Sea: Zubmariner System requirements

PC / Windows

PC / Windows

  • Minimum:
  • Dual Core 2.0 GHz
  • 2 GB RAM
  • graphic card Intel HD or better
  • 1 GB HDD
  • Windows XP(SP2)
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