STAR FOX Polygon View Mode: At the continue screen after you lose your last ship, you can play with the polygons on the screen. Here are the controls.
Left and Right-Rotate object horizontally
Up and Down-Rotate object vertically
L button-Zoom in
R button-Zoom out
X button-Stop rotation
A button-Hold it down while rotating to 'draw' with the object. Release the button to clear the screen.
Controller 2: Up, Down, Left, Right, SELECT, START, Y, or B-Changes to a different object.
STAR FOX Black Hole: To enter the black hole, a secret area on the map with no apparent way in, you must enter Level 1-2 (Asteroid Belt) and keep going until you find a spinning asteroid bar. Hit the center of the asteroid bar just before you hit it. Do it with the next 2. If you hit all 3 bars right before you hit them (fly through where the breakable asteroid was...). A Laughing asteroid will appear. Shoot it repeatedly to open the gateway to the Black Hole.
There are 3 level warps in the Black Hole. Fly through and look around this Lost ship graveyard...
STAR FOX Enter another dimension: Choose level 3, then go to the asteroid belt and keep shooting the second big asteroid until it is destroyed. A bird-like object will fly out. Do not shoot it. Ram into it to travel 'out of this dimension'. Shoot the paper-like objects. The boss does not have a life meter, just icons (until they display three 7s) Shoot THE END letters until they are in the right position. The letters will be orange when they are correct.
SUPER MARIO KART Small Racer: When at the character select screen (only in racing) hold Y and push A and your character will become small. This will not effect speed whatsoever, it will only make it so your opponents can run you over to slow you down. Hold Y and push A to make yourself big again.
SUPER MARIO KART Unlock Special Cup: At the cup select screen, press the following buttons in order: L, R, L, R, L, L, R, R.
SUPER MARIO KART Unlock Special Cup on Time Trial: Go to Time Trial, put the cursor on Mushroom Cup and press: L, R, L, R, L, L, R, R, A. If you haven't unlocked Special Cup already, it'll be available now.
SUPER MARIO COLLECTION
SMB1 High Score Reset: On the title screen, press A, B, L, and R all at the same time.
SMB1 Restart after game over: Hold A + B on the gameover screen, then press start.
SMB2 Kill Yourself: Pause then hold L+R and press select.
SMBLL High Score Reset: On the title screen, press A, B, L, and R all at the same time.