The Final Battle was a one night show that was featured during Halloween Horror Nights 13, which was located in Immortal Island. The battle took place between The Nightmare, and Darkness to see who the world feared more. Nightmare won, but as Darkness disappeared from the stage, he screamed, " I shall be back! I will destroy you all another day!" Darkness' line served as a clue for what lay ahead in Halloween Horror Nights: Sweet 16.
Halloween Horror Nights 13
Characters: The Director (Event Icon)  • Incubus  • Succubus  • The Sentinel  •  • Fire King  • Ice Queen  • The Caretaker
Haunted Houses: All Nite Die-In  • Funhouse of Fear  • Jungle of Doom  • Psycho Scareapy  • Screamhouse: Revisited  • Ship of Screams
Scarezones: Boo-Ville  • Hide & Shrieeek!  • Immortal Island  • Night Prey  • Port of Evil  • Toxic City
Shows: Bill & Ted's Excellent Halloween Adventure  • Infestation