Mario Kart Super Circuit
Hold L + R + B + Start while switching on your GBA to delete all game data.
Win a gold cup in all races to unlock the Special
Cup circuit.
Get 100 coins or more by the end of the cup to unlock extra
tracks. Press L or R to view and play them. Once you get an "A" rank
on every cup on every class you will unlock all of the original courses from
Super Mario Kart.
Successfully complete all circuits in all classes to change the background color
of the title screen.
Successfully obtain a triple star ranking on all the Super Circuit cups to change the title screen background to nightime.
Press L to shoot a green shell or press R to jump at the character selection
screen.
Men in Black: The Series
Enter the following codes to begin at those levels
Code Level
FCHTRMNS - Level 2 Forest Landing site
HSDSHSBS - Level 3 Alien Technology Lab
MXNMSNNG - Level 4 Rocket Silo
THXBXSCK - Level 5 MIB Safehouse
NNTNDWNY - Level 6 Halloween In Manhattan
NFNTMMDD - At the End
Monsters Inc
Here are some level codes:
Level Code
Level 1 Complete - YMB2VN
Level 2 Complete - LRB13G
Level 3 Complete - 4RB97C
Level 4 Complete - 7QCZB9