Level codes:
 
 DUDEM,
 ISLAND,
 WYATT,
 SHARP,
 COKECOLA,
 TURBO,
 POWER,
 STUDENT,
 FUNCTION,
 HDD ON,
 ACCOUNT,
 CRICKET,
 FUSSBALL,
 GOLDSTAR,
 UNITED,
 JOYSTICK,
 HAMBURG,
 SAMPO,
 REGISTER