All Cars, Tracks and Difficulties
At the Mode Select screen, press L, Z, R,C-UP, C-DOWN, C-LEFT, C-RIGHT, START. You should hear a chime if you did it correcly.
Change Car Colors
To change your car's colors, simply press the R-Button during the car customization screen. Note that there are only a few select colors for each vehicle.
End Credits and Final Six cars
Beat the Jack, Queen, King and Joker Cup on Novice, Standard and Expert difficulty to see the game's end credits. After resetting the machine, the title screen and intro music will change and the final row of six cars will be selectable.
Joker Cup
To get the Joker Cup and six additional tracks beat the Jack, Queen, and King Cup on Standard difficulty.
Master Difficulty Level
If you beat the Jack, Queen, King, and Joker cup you'll get extremely hard Master Difficulty.
Shotcuts
Mute City II Shortcut
Right after you make the third hard turn, you will see a ramp to the left that looks like it will lead you off track. If you hit it with a booster, you will fly over the gap and onto the next strip of tracks.
Rainbow Road Shortcut-
At the top of the first big drop, drive off the side of the track and tilt backward. Starting from 30th, this will put you anywhere from 20th to 1st, depending on how well you pull it off.
Sector B Shortcut-
Towards the end of Sector B on the hill right before the end use a boost or two and when the wall disappears turn to the left and fly straight onto the finish line.
Smaller Cars
At the car select screen press and hold the (L) and (R) buttons. While holding those buttons press C-LEFT and C-DOWN to shrink the cars.
Title Screen Change
To have the title screen change to a comic book motif, beat F-Zero X on Expert. For a second change, beat the game on Master difficulty.
X-Cup (Track Generator)
Beat all four cups on Expert difficulty to open F-Zero's hidden X-Cup. This cup will randomly generate six courses, ranging from utterly boring to plain cool. Beating the four cups will also open a Master Difficulty level.
Rotate Cars on Customization Screen
Want to see your car from different angles? At the customization screen press the C-Buttons to rotate the car in all directions.