Excitebike 64 

Original Excitebike 
Successfully complete tutorial mode to unlock the original NES version of Excitebike under "Special Tracks".

Soccer mode 
Finish in first place in the silver round of the novice season to unlock soccer mode.

Hill climb mode 
Finish in first place in the gold round of the amateur season to unlock hill climb mode.

Excite 3D mode 
Finish in first place in the challenge round of the pro season to unlock excite 3D mode.

Cheat Codes 
At the main menu, hold L + C-Right + C-Down and press A to display the cheat code screen. Then, enter one of the following codes to activate the corresponding cheat function:

Unlock all stunts 
Enter "TRICKSTER" as a code at the cheat screen. -From: fivejoys@webtv.net

Stunt bonus 
Enter "SHOWOFF" as a code at the cheat screen.

Invincibility 
Enter "MOWER" as a code at the cheat screen.

Invisible riders 
Enter "INVISRIDER" as a code at the cheat screen.

Transparent rider 
Enter "XLURIDER" as a code at the cheat screen.

Debug mode 
Enter "IMGOINGNOW" as a code at the cheat screen.

Big head mode 
Enter "BLAHBLAH" as a code at the cheat screen.

Small head mode 
Enter "PINHEAD" as a code at the cheat screen.

Mirror mode 
Enter "YADAYADA" as a code at the cheat screen.

Night mode 
Enter "MIDNIGHT" as a code at the cheat screen.

Strange colors 
Enter "ROTCOLS" as a code at the cheat screen.

Beat This! mode 
Enter "PATWELLS" as a code at the cheat screen.

Developer team photo 
Enter "UGLYMUGS" as a code at the cheat screen. Then, enter the credits screen from the options menu.