Beyond the graveyard is a dark forest brimming with tube-shaped ghosts that rain a hail of green onion spears on Arthur's head (green onion is surprisingly lethal in Demon World).
The incredible challenge of Ghosts'n Goblins, coupled with the fact that the game must be beaten twice to be completed once, probably led many players to conclude that the game was literally from Hell.
Ghouls'n Ghosts was ported to the Sega Genesis and NEC SuperGrafx, and a heavily revamped version, called Super Ghouls'n Ghosts, made it to the Super NES.