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.

Eight additional cars and weapons:
Hold Right + Select + A + B at the title screen and press Start to begin game play. Allow the timer to reach zero without crashing to receive eight cars and all weapons.

All weapons:
Hold A + B + Select, then press Start at the title screen.
Information in this section was contributed by anca peter.

Pause game play:
Press A on controller two.
Information in this section was contributed by anca peter.

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. The only thing that can harm you is the helicopter. After bombing you, you cannot go off-road again.
Information in this section was contributed by starjack.

Hint: Extra life:
Before the time runs out, when you begin the level get at least 10,000 points for an extra life.
Information in this section was contributed by OLIVER NARRAGANSETT.

Hint: Level 1:
Find the dirt road at the start of the level. Drive directly forward on that road to avoid all obstacles.