Enter one of the codes below to activate the following cheat function:

Function - Code

Level select - Y + D + F9 
Extra lives - X + J + T 
Additional 500 seconds - F3 + F5 + F9 

Level Passwords:

CORROD 
FISHER 
GOGONO 
EXTERN 
XFILES 
GOTERR 
SPECTR 
PICNIC 
POILUS 
FEDODO