Ned explores the Graveyard
The Graveyard Nightmare is one the five Nightmare Worlds Ned can explore on the Nightmare Ned video game. Controlled by the Graveyard Shadow, it is the creepiest Nightmare of the game: it has death- and Halloween-related enemies such as zombies, ghosts, ghouls and fiends. The Graveyard's environment bears a strong resemblance to the works of Tim Burton and Edward Gorey.
The Graveyard Nightmare represents Ned's fear towards his and his grandfather's death.