As the portal leading to Gravity Falls closed, the demons collectively groaned.
"Well, we're stuck in the Nightmare Realm." said Keyhole. "Possibly for a pretty long time."
"Any ideas for what we could do now?" asked Teeth.
"I know." said Kryptos. "Maybe we could just try to continue the party here."
"Hmm. If nobody has any better ideas, I'll start setting up." said 8 Ball. He raised his hands, conjuring several tables on which sat decks of cards, board games, and other such things, though most humans would consider these games far stranger than anything they've ever seen. When all of the tables were set, the demons each took their seats and began playing.