The other houses ran out of eligible spouses around generation 4 so that
was the end of the game for me. I imagine it was just bad luck, but
perhaps a more forgiving RNG could be used? You could also allow for distant cousins within the family to marry and for widows and widowers of appropriate age to remarry. Chelsea posted already about the interface issues so I will merely second that comment. On the whole I think you have a good start and I'm looking forward to future updates.
Another interface idea might be to replace the gender icon with a skull when characters die just to make it easier to see who is still alive when zoomed out.
We aren't actively working on the game right now. So the core is still as it was after the game jam. We might revisit it to turn it into a more full experience in the future after we finish current projects.
We do thank you for your continued interest and return though! If enough players are interested in buying a full version of the game then we can spend more time on it!