On the title screen or during play, type "O.S. FRIENDLY" and use any of the following keys:
'F'---Gives robocod some wings
'P'----Gives robocod the plane
'B'-----Gives robocod the bath
'C'------Gives robocod the car
'X'----Go straight to the exit
'S'--------------Save position
'K'---------------Kill robocod
'M'---------------Map selector
'RETURN'--Invincibility on/off
'F6'---------------50 Hz (PAL)
'F7'--------------60 Hz (NTSC)
'F9'------------Screen effects