Manor Lords creator and lead developer Greg Styczeń has responded to the demand to introduce the bubonic plague to the medieval city builder, and simply put, it's not happening, which is sure to be a relief for our villagers.
Responding to one fan on Twitter, Styczeń says that while the idea of adding plague and disease "seemed interesting at first," as far as he's concerned, they're "not real game mechanics" that could fit into Manor Lords. Elaborating on this, it sounds like this is largely thanks to the city builder's medieval setting, which would make controlling disease in a realistic and interesting way rather difficult.
