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The Unterzee will claim everything.

<span class="bold">Zubmariner</span>, a delightfully deep and terrifying expansion pack to the exploration/roguelite cult hit Sunless Sea, is available now for Windows, Mac, and Linux, DRM-free on GOG.com. Resourceful captains can now dive into the <span class="bold">base game</span> for 66% off.

Your steamboat has served you well, helping you roam the islands, transport curious cargo, worship cruel gods, overcome madness or seek after it. Now it's time to convert your vessel into a zubmarine and dive into the unforgiving, ever-shifting depths of the Unterzee. Death, despair, and mind-rending discoveries await you in these dark waters. Will you survive long enough to uncover the stories of the 11 new ports and to brave all the fresh terrors lurking there? You might have to resort to cannibalism, deception, or the occasional shady deal, but that's a small price to pay for an entrepreneurial soul such as yourself, isn't it Trespasser?

Succumb once again to your severe "sea-seekness" and dive deeper into the abyss as a foolhardy <span class="bold">Zubmariner</span>, DRM-free on GOG.com.
In anticipation of these submerged horrors, Sunless Sea received a free content update, which adds a handful of new quests and events, along with a revamped Rose Market.
The 66% discount on <span class="bold">Sunless Sea</span> will last until October 14, 4:59 PM UTC.


https://www.youtube.com/embed/jS3h3fwVa3U
Post edited October 12, 2016 by maladr0Id
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tremere110: For example.

Sorcerer King Rivals does not require Sorcerer King. None of the Shadowrun games requires purchase of another - Dragonfall was an expansion for Shadowrun Returns but has since been separated into its own standalone game.
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Gede: But is this the only case where GOG enforces an artificial dependency, as far as you know?
I haven't gone around testing DLCs to see if they can be run indepently. I only found out about this thanks to the initial error on GoG.

That said GoG enforces artificial dependencies on stuff like soundtracks - this is just the first time that I'm aware of that it has enforced this on an actual DLC.
FYI after today's update it's no more standalone expansion...