FNAF: Ultimate Custom Night lets you choose which animatronics appear during the night and how difficult they are. You sit in an office and try to survive while managing tools like cameras, vents, and power. Each animatronic has different behavior, so you need to learn how to deal with them one by one. The goal is to last until 6 AM without getting caught.

There are over 50 characters from different FNAF games, and you can set each one’s difficulty from 0 to 20. Some attack from hallways, others come through the ducts, and some require specific actions to stop them. You can also customize visual settings like the office background and unlock small extras after surviving certain challenges.

Main features:

• Custom loadouts with difficulty sliders
• Lots of mechanics: mask, flashlight, audio lure, temperature, noise
• Unlockable cutscenes and office themes
• Built-in challenges with preset combinations

Tips:

1. Start with easy characters to learn how systems work
2. Focus on audio cues—they give useful warnings
3. Check the “how to deal” menu for each animatronic
4. Don’t forget about power—running out means instant loss

The game is all about trying, failing, and slowly getting better. It’s designed for short attempts and learning through repetition. You can play it casually or spend hours trying to beat all 50 at max level.