Iggy's Reckin' Balls Cheats (Nintendo 64)

Enter ENTAROADUN.

Enter MICROBALLS.

Enter ICEPRINCESS.

Enter ROLFHARRIS.

Enter THEUNIVERSE.

Enter OHMY. Running into other balls or obstacles may cause bombs to appear randomly.

Enter JUMPAROUND. Then, pause game play to access the level selection option.

Enter 2ROKTOO.

Tap Jump while on a boost platform.

Enter NONSTOP.

Enter 2TIMES.

Enter GOOEYGOOGOO.

Enter SWOPSHOP.

On the Title Screen, press B, A, L, L, Z (BALLZ). This will let you control two different
characters named Banjo and Kazooie. Banjo has an extra long grappling line and Kazooie
can jump super high.

Tap JUMP while on a boost platform to refill your boost meter.

Press R + Z at the opening screen. Then, enter one of the following codes.

Enter TOOMUCHPIE.

Enter GOBABY.

Enter GOOEYICEPRINCESS.

At the player select screen go to a character, press left and/or
  right on the joystick and wait there for a minute (or so) and they
  will say what the say when they get hit.

To unlock the nine secret characters you have to beat each race in first place. For
example, if you beat Downtown you'll get Sno-eee. If you beat Candylane you'll get King
Jr

To access a secret character without winning, press Z, A, L, R on the player selection
screen.

Enter HAPPYHEADS.