http://www.netrover.com/~timt/cheats/j/jimmysfantastic.html (Amiga Plus Extra No. 5/97, 05/1997)During play, type "PENCIL" and use the following keys:
'F1'--Temporarely freezes the bad dudes
'F2'------------------For Invincibility
'F3'---------------------Killer Bubbles
'F4'----------------------For Leve Skip