Virtual Villagers 3: The Secret City Cheats - PC
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Chief's Duties
Gather Herbs - He can gather herbs for alchemy potions.
Procreate - All the males but the chief died and he was able to create offspring.
Heal All - Males and females who are sick can be healed by the chief if ill without procreating.
Speed-up Time
To speed up time in the game, just change the time accordingly on your computer.