How exactly do fire watch/guard towers work to prevent riots and fires?
A. Most buildings have a fire risk meter when you place them, over time the risk of fire will increase. Fire watch towers will keep an eye on buildings within there patrol area, if a building is in range of a fire watch their fire risk will slowly decrease. This is also the way the watchtowers work, though they only need to guard over housing, a shack has the highest risk of a riot starting and even if it is in range of a watchtower, it will still increase(just not as fast). The higher the level of housing, the lower the risk; once a house is upgraded to a small hut and they are in range of a watch tower their risk will decrease.