Glover

LOW GRAVITY:  C-LEFT X2, C-UP,C-LEFT, C-RIGHT, C-UP X3
FAST GLOVER:  C-LEFT X2, C-RIGHT, C-UP, C-RIGHT, C-LEFT, C-UP X2

In the middle of the game press start and entre the code up-c right-c down-c right-c up-c left-c 2x that will tern glover in to a frog

Pause your game and then enter the following codes:
Infinite life - Up-C x5, Right-C, Down-C, Right-C
Secret cheat - Down-C, Up-C, Right-C x2, Down-C, Left-C, Right-C x2
Open portals - Up-C, Right-C x2, Down-C, Left-C Down-C, Up-C, Right-C
All cheats off - Down-C x8