Super Ghouls 'n Ghosts and Ghouls 'n Ghosts are two entirely different games, with different levels. G 'n G lets you shoot upwards while Super G 'n G has the double jump. If you want some good fun for a few dollars more, the GBA port of Super Ghouls 'n Ghosts includes a new arrange mode where you can play some of the Ghouls 'n Ghosts levels with the Super G' n G weapons and the double jump. There's also a remake of the first level of Ghosts 'n Goblins in there.