Shake the game to display the "Enter Cheat Code" screen. Enter one of the following codes to activate the corresponding cheat function.
Construction costs set to $0
Enter i am weak as a code.
All extra rewards
Enter pay tribute to your king as a code.
Recycling plant, waste to energy incinerator and normal incinerator
Enter garbage in, garbage out as a code.
High tech industries
Enter nerdz rule as a code.