dunkleosteus
Roman Pleb
They must've been working on this for a long time. I wonder how many of the things we got in seasonal patches were possible because of this expansion or vice versa? I'm remembering how they added snow drifts to districts in the snow and I wonder if that is related to that antarctic-research-station-looking building. Maybe they realized they'd have to add it anyway when developing the research station and just decided to add it to the base game as well, if it would require some sort of architecture change and it would be easier to change it now rather than retroactively change anything they added later before the expansion was released.