Here are some cheats and tips for the game Spy Hunter.
Ten additional cars:
Press Right + Select + Start at the title
screen to begin game play. Allow the timer to reach zero without
crashing to receive ten cars.
All weapons:
Hold Select + A + B, press the center
of the D-pad, then press Start at the title screen.
Super car:
Hold A + B + Select + Right and
press Start at the title screen. Ten cars and all weapons
will be available.
Drive off-road:
Quickly move to the right side of the screen as soon as your
car exits from the equipment van. Your car will be able to drive
over water and other ground features until the road widens.