Load or start a new city, then choose END from the Save/Load menu. When the "See you soon!" screen appears, press the following on controller 2: Left, A, Right, Y, Up, B, Down, X, Select, Start, Start, Select, R, R, L, L. Press Up or Down to scroll through the options, and press Left or Right to toggle them on or off. To activate the selected features, change MEMORY to SET and reset the SNES (they will remain active even if you power off). To deactivate everything, go back into the menu, change MEMORY to CLR, and press B.