Play as the captain of a steamship on an underwater ocean surrounding the fictional city of Fallen London. Manage your ship’s fuel and food supplies as you try not to go mad fighting off lovecraftian monsters.

Take the helm of your steamship and set sail for the unknown! Sunless Sea is a game of discovery, loneliness and frequent death, set in the award-winning Victorian Gothic universe of Fallen London.
If the giant crabs, sentient icebergs and swarms of bats don’t get you, madness and cannibalism certainly will. But that old black ocean beckons, and there’s loot for the brave souls who dare to sail her.
Betray your crew, sell your soul to a Devil, marry your sweetheart. Survive long enough and you’ll achieve your life’s ambition.
You will die, but your legacy will live on…
Key features
Find your father’s bones. Determine London’s destiny. Defy the gods of the deep sea.
– castles of sparkling ice, prisons perched on lily pads, fog-shrouded lighthouses and the DAWN MACHINE.
But you can pass on resources from one generation to the next. Acquire a family home and a hoard of heirlooms. Build up your own story across generations of zailors who braved the sea and lost – or won…
, spider-crewed dreadnoughts and sentient icebergs.
stray too far from the gas-lamps of civilisation and your crew will grow fearful and eventually lose their sanity.
with powerful engines, cannons and pneumatic torpedo guns. (Or buy a bigger, better ship.)
like the Haunted Doctor and the Irrepressible Cannoneer. Each has a story to tell, if you can draw it out of them.
the Comatose Ferret, the Wretched Mog, the Elegiac Cockatoo, and more!

Take the helm of your steamship and set sail for the unknown! Sunless Sea is a game of discovery, loneliness and frequent death, set in the award-winning Victorian Gothic universe of Fallen London.
If the giant crabs, sentient icebergs and swarms of bats don’t get you, madness and cannibalism certainly will. But that old black ocean beckons, and there’s loot for the brave souls who dare to sail her.
Betray your crew, sell your soul to a Devil, marry your sweetheart. Survive long enough and you’ll achieve your life’s ambition.
You will die, but your legacy will live on…
Key features
Find your father’s bones. Determine London’s destiny. Defy the gods of the deep sea.
– castles of sparkling ice, prisons perched on lily pads, fog-shrouded lighthouses and the DAWN MACHINE.
But you can pass on resources from one generation to the next. Acquire a family home and a hoard of heirlooms. Build up your own story across generations of zailors who braved the sea and lost – or won…
, spider-crewed dreadnoughts and sentient icebergs.
stray too far from the gas-lamps of civilisation and your crew will grow fearful and eventually lose their sanity.
with powerful engines, cannons and pneumatic torpedo guns. (Or buy a bigger, better ship.)
like the Haunted Doctor and the Irrepressible Cannoneer. Each has a story to tell, if you can draw it out of them.
the Comatose Ferret, the Wretched Mog, the Elegiac Cockatoo, and more!