Mohawk Games, the developers of Old World, have released the latest update for their game. With this update you get performance and memory optimizations, civilian units cannot defend cities anymore, and you will be able to play DLC civs in the game of the week, even if you do not own them.
Discuss this update with us here (and read the full list of changes too).
Old World is currently available in the Epic Store, on GOG and Steam.