On the map screen type "DONTPANIC" and use the following keys while on the map screen:
'A'-----------Gives you all power ups
'Q'-----------------Adds stars to you
'W'----------Subtracts stars from you
'F5'---------Adds lives to your stock
'F6'--Subtracts lives from your stock
'F7'-----------Add gems to your stock
'F8'----Subtract gems from your stock
'F9'----------Add bombs to your stock
'F10'--Subtract bombs from your stock
'F1-F4'---Jump to corresponding level
'1-7'---Warp around the current world
'Help' ------------------ Fly mode on
'Del' ------------------ Fly mode off
Use the following keys during the platform sections:
'F1'--Turns you in to the fire ball
'F2'-------------Gives you a shield
'F3'-------------Gives you a shield
The following doesn't work on all versions:
Pause the game and slowly type any of the following:
"COOL JUMP NUT"----------For infinite lives
"SORCERER"----------------For invincibility
"OCEANSOFT"--To activate the following keys
'F9'------------------------------For bombs
'F10'--------------------------For diamonds
'SPACE'----------------------To skip levels
On level one, when you come to the first teleporter, keep going right, until you find the the first ladder. Go up to it and get a blue flag - it has loads of gems, lives and hit points, so you can keep going until you have thousands of stars and 99 lives.
If you collect 99 gems you will be given a star which allows you to save your game and to enter bonus levels.