The story goes that those who downloaded the 14MB zip file found more than just bug fixes. The Subtle Shifts
In a normal game, enemies attack your walls. In v2.0.0.9 , the invaders didn't destroy buildings. They would simply walk into the houses, and the "population" counter would drop to zero, though the houses remained occupied. The Corrupted File
The city guards, or Prefects, no longer just fought fires. They would congregate in squares, standing perfectly still, staring at the screen. If you tried to delete their barracks, the game would crash.