Before each code, press "p" and then the Backspace key.

arjan - HAHAHA displayed
tim - AWESOME displayed
check - displays numbers on the screen
greetz - opens an arjan greetz window
lamer - jump to next level
mark - loose life and start over
apogee - toggles between 16 colors and normal
gunhed - receive every weapons w/ 100 rounds of each 
         and 5 rounds of TNT
doom - makes it harder to destroy enemies and collect
       ammo
hooker - takes you to the bonus stage after finishing
         the current level
hocus - teleports you, provided there's an enemy below
        or above you
bad - gives you the hip-hop bird
sable - gives you super sonic speed
cstrike - gives you the air board
bouf - temporarily invincible
ken - exits game

by unknown


You have to pause the game then press backspace 
(or type DD if that doesn't work) before you use the 
following codes. 

SABLE-speeds Jazz up 
CSTRIKE-gives Jazz a surfboard 
BAD-gives Jazz the bird 
LAMER-skips the level 
HOCUS-teleports Jazz 
BOUF-makes Jazz invincible 
GUNHED-all guns+100 rounds per 

Submitted by opelgtkid@aol.com