“I have also seen his eyes rest fondly upon the faces in the room, upon the pictures on the wall, upon all the familiar objects of that home, whose abiding and clear image must have flashed often on his memory in times of stress and anxiety at sea. Was he looking out for a strange Landfall, or taking with an untroubled mind the bearings for his last Departure?” - Joseph Conrad, The Mirror of the Sea

The heartbeat of Sunless Sea is departure from, and return to, Fallen London. Mechanics and narratives exist to encourage this. Fallen London is a good place to reduce terror. It’s a good place to sell many goods. A number of key quests end there. The Admiralty will reward you for all the port reports you’ve stacked up. And so on.

The mechanics here, I think, were moderately effective. They increase the sense of transition from a familiar home to desolate outlands. They provide some narrative resonance for the return-to-home pacing mechanic that nearly every CRPG uses. But to make that heartbeat more narratively compelling, I wanted to encourage an emotional response in the player around their return home. Maribeth’s music and Paul’s art both help with that – and for Fallen London players, this place is already home, of a kind.

But not all Sunless Sea players are Fallen London players, and there’s a limit to the emotional attachment a player can form when the whole game is about exploring the sea. If we put too much content in Fallen London, it tilts the balance of the game. So I hit upon the idea of a sweetheart for you to return to. Like everything else in London, they can’t be the focus of the game, but that, I realised, could be the point – you’re a sailor, an explorer, you’ve chosen the sea as your first love. We couldn’t make that a really game-changing choice, because if you decide not to be a sailor, it’s game over – but we can encourage you to live in the sense of that choice and explore it from different angles. Because this is a game, there are system elements, as well as narrative ones, that we can use to make that happen.

The first and biggest system element was a Terror reduction. Terror builds up over sea, and returning to London is a way to deal with it. Having a sweetheart allows you to shed Terror a little faster – so there is actually a thematically appropriate game-mechanical reason why players will want to rush home. It can’t be overwhelming or essential or the players feel tied to their sweetheart’s apron strings, but it has to be powerful enough to make players care. (One consequence of using system elements is that there’s more pressure to keep the writing fairly minimal. Some players will love role-playing a captain who can hardly bear to part from her sweetheart. Some players will always be thinking, OK, I’ve got my 20-point Terror reduction or whatever, now can I get back to sea, oh God more dialogue choices to click through. And after the fifth time in the game, even some of the first kind of player will become the second kind. So the writing has to stay lean, which also gives the players who care more room to add their own interpretation.)

The second system element was Salt’s Curse. Salt is the most enigmatic of the three gods of the sea, the one whose dominion is partings and horizons, and who represents that same wanderlust I mentioned above. If you upset Salt, you can come home to find your sweetheart dead or vanished, doomed by your decision to abandon them. Cliché, trope or archetype? Take your pick. It’s certainly apposite to maritime romance themes. In any case, some players complained that they felt it was trivial when their sweetheart died, because there wasn’t actually much engagement with them.

Those complaints disappeared when I added the third element: the ability to conceive a child with your sweetheart. In fact, they were replaced by complaints that Salt’s Curse was too brutal an effect or gained with too little warning. This was partly an emotional reaction, and partly because the emotional effect was underpinned, again, with a mechanical element. You can give your child gifts from the sea – stories, souvenirs – and inspire sea fever in them. Inspire them enough, and they’ll become a Scion, the start of a dynasty of captains. This is a significant advantage when restarting games.