"The harvest moon glows eerily."
Nightmare Fuel is a post-Moon Lord crafting material dropped by Pumpkings after the Devourer of Gods has been defeated. It is always used in conjunction with Endothermic Energy.
- It takes 631 Nightmare Fuel to craft everything they are used in (including all God Slayer and Auric Tesla headpieces).
- This would require defeating the Pumpking between 32 to 64 times.
- The tooltip may be a reference to the item of the same name from the game Don't Starve, which is obtained from insanity based creatures.