$1,000,000 (in 2D Game)
Select City Info, Budget from the menu. At the Budget screen, hold R1 and press X, Circle, Triangle, Square. Release R1 and hold L1. Press X, Circle, Triangle, Square. Release L1 and hold R2. Press X, Circle, Triangle, Square. Release R2 and press L2. Press X, Square, Triangle, Circle. Release L2. The sound of a cheer will confirm correct code entry. Note: This code may only be enabled once per game.
0% interest Bonds (in 2D Game)
Select City Info, Budget from the menu. At the Budget screen, hold Triangle and press L1, L2, L1, L2, R2, R1, R2, R1. Note: This may result in fines of up to $100,000.
Fade to Black (in 3D Game)
Press Down(6), L2, R2. To pause the fade, press Left(6), L2, R2. To return to normal, press Right(6), L2, R2.
Flight Mode (in 3D Game)
Press Right, Left, Right, Left, Right, L2, R2, Start(2). The code Right, Left, Right, Left, Right, L2, R2, X(2) may also be used. Press Start to return to normal. You can fly around the city without being limited to the roads. Flight mode controls are:
R1: Altitude up
R2: Altitude down
L1: Propel forward
L2: Propel backward
Up: Look up
Down: Look down
Left: Turn left
Right: Turn right
Gold Nugget Trail (in 3D Game)
Activate the helicopter cockpit code multiple times by pressing [R2, L2, R2, L2, R2, L2, R1, L1, R1, L1, R1, L1] seven times, followed by R2, L2, R2, L2, R2, L2(2), R1, L2, R1, L2, R1, L2, R1. A trail of golden nuggets will appear on the road. Collect these nuggets as you move around the city to increase your city fund.
Helicopter Cockpit (in 3D Game)
Press R2, L2, R2, L2, R2, L2. Turn off the cockpit by pressing R1, L1, R1, L1, R1, L1.
In-Game Reset
Hold L2 + L1 + R2 + R1 + Start + Select and the game will start over.
Maximum Fire, Police, and Military (in 2D Game)
Select and cancel the dispatch tool with the normal arrow cursor. Go to the status bar. Press Left, Right, Left, Right, Circle, X while keeping the cursor within the status bar area. Use of any of the dispatch tools (fire, police, military) to get the maximum number allowable, regardless of the number of stations you have.
Most Tools Available Free (in 2D Game)
Select and cancel the tree tool with the normal arrow cursor. Go to the status bar. Press Up, Down, Right, Left, Up, X while keeping the cursor within the status bar area.
Night (in 3D Game)
Press Down, Up, Down, Up, Down, L2, R2 to cycle day and night. To return to normal, press Down(2), Up(2), Down(2), L2, R2.
Slot Machine Mode
Start a new game and select the "Recreation" icon. Then, move over the "Marina" icon and select that feature. Build the marina near a water section. Select the "Budget" icon and enable the "Legalized Gambling" option under the "City Ordinances" menu. Use the "Query" tool to highlight the sailboat, then press L1. A slot machine will appear. Press Circle to stop the slots at a cost of $100 per attempt to win various buildings or disasters.
Translucent City Map (in 3D Game)
Press R1, R2, R1, R2, R1, R2, R1, R2. A translucent city map HUD with a position indicator will appear. To return to normal, press L1, L2, L1, L2, L1, L2, L1, L2.