Brains

 was one of four limited time crafting currencies released on October 6, 2015, during the Treehouse of Horror XXVI Event.  is one of four currencies used to craft prizes, which were earned by tapping on Disco Zombie Nightmares or Star Spawn that spawned in the player's or friends' towns.

Spawning Disco Zombies
Disco Zombies Spawned in Acts 1-2, Star Spawn in Act 3. Star Spawn would drop 2 crafting currencies, randomly.
 * The Freakmobile would spawn 12 Disco Zombies every 8 hours.
 * Making Count Burns Rest in Peace, his 24h job.
 * Making Mr. Burns Read from the Necronomicon, his 4h job, after purchasing the Sepulcher of Evil.
 * Acts 1-2
 * Martin's Tell a Spooky Story at the Spooky Campfire would start Disco Zombies spawning in the town.
 * Completing Martin's Tell a Spooky Story would instantly spawn Disco Zombies.
 * Any Roast S'mores task that started with Disco Zombies spawning would generate Disco Zombies upon completion, even if the spawning changed in the middle of their task.
 * Act 3
 * Kids that spawned Disco Zombies by Hunt Nightmares: Greta Wolfcastle, Jimbo, Kearney, Martin, Michael D’Amico, Squeaky Voice Teen, Wizard Martin

Bones Crafted Items
US$