From Fallen London Wiki

nah, i enjoy heart's game. it's hardcore. you need to play the numbers game, crest the highs and ride out the lows, to snatch a hard-fought victory out of the claws of defeat. the odds are stacked against you, and you need to take up arms to beat them. in this, it is unlike anything else in fallen london.

everywhere else is constrained by how the mechanics exist in service of the narrative. if one manages to get into an unwinnable situation, that's a bug that needs to be patched; if ever the mechanics interfere with the story being told, it is the mechanics that must bend. everywhere else in fallen london is ultimately about winning, and about earning the next bit of narrative.

heart's game is different. heart's game is mechanical crunch in its purest form, for its own sake. it is as much about losing as it is about victory, for only in the depths of loss can the hunger be forged with which victory is sweetest. heart's game is the dwarf fortress of fallen london