Grid Racer Mode
Access the "Enter Password" screen as described above, enter the password X, TRIANGLE, RIGHT, SQUARE, RIGHT, UP, DOWN, TRIANGLE, RIGHT, DOWN and press START to return. Now choose "Two Player Start" from the current menu. At the two-player world select screen, you'll find three new worlds called "Grid Racer-Round 1" through "Round 3." Choose one of these worlds and you'll be playing as race cars; cross the finish line on each lap to capture a flag.

All Flags Mode
Choose "Start Game" from thee main menu, then choose "Restore Game" and access the "Enter Password" screen. Enter the password DOWN, TRIANGLE, RIGHT, X, RIGHT, UP, RIGHT, CIRCLE, X, DOWN and press START to return. Now start the game and you'll find that you have to capture all of the flags on each level instead of the usual designated number.

Free-For-All Mode
Access the "Enter Password" screen as described above, enter the password UP, TRIANGLE, X, RIGHT, UP, TRIANGLE, CIRCLE, DOWN, RIGHT, DOWN and press START to return. NOw start the game and you'll find that neither player is "it" and you can both capture flags at any time.