Facing 50 animatronics simultaneously at difficulty level 20 is the most brutal experience Scott Cawthon has ever created. One moment of inattention. One wrong click. The screen goes black. FNAF Ultimate Custom Night is a game that demands total concentration, where slow reflexes mean death.
Quick Game Facts
Learn the keyboard shortcuts
Instead of moving the mouse, use the A, W, D, F keys to close doors and partitions, and the 1-6 keys to switch electrical systems.
Faz-Coins and Death Coins
Pick up Faz-Coins from the cameras and buy Death Coins at the Prize Counter to defeat extreme threats like Puppet or Toy Freddy.
Dealing with Dee Dee
Dee Dee characters may appear randomly to add animatronics to the show. You should proactively activate the appropriate Power-ups in the preparation menu to block this summoning.

Decoding the Temperature and Energy Balancing Mechanism
Power Source
- Impact: Continuously consumes energy when using doors, lights, cameras, and electrical devices. Running out of power will disable all defenses.
- Response: Turn off fans when safe; only close doors right before an attack to conserve battery power.
- Risk: A power outage will cause the entire system to shut down, leading to an instant jumpscare.
Noise
- Impact: Due to the operation of fans, air conditioners, ventilation fans, or other auxiliary equipment in the office.
- Response: Turn off unnecessary noise sources; keep the space quiet to avoid detection.
- Activating Enemies: Attracts sound-sensitive animatronics like Music Man and Lefty.
Room Temperature
- Impact: Increases when fans are turned off to save energy or when heaters are turned on to repel enemies in the ductwork.
- Response: Flexibly switch: turn on the heater to ward off enemies, then turn on the air conditioner to cool down and immediately turn it off to save energy.
- Activating Enemies: Excessively high temperatures will activate heat-loving enemies like Jack-O-Chica.
Need a change of pace? Play Noob vs Fnaf, One Night at Flumpty's 2, or Five Nights at Freddy's: 3D Escape. Keep a constant perspective. Manage resources strictly. Requires extremely quick reflexes to unexpected attacks.
FNAF Ultimate Custom Night is not for the impatient. Every second is a real fight for survival. Conquer each small milestone before embarking on the legendary 50/20 challenge!