Ultimate Custom Night is a survival horror game where players must monitor a complex security office using touchscreen controls. The goal is to survive against a large roster of animatronic characters, each with unique behaviors and mechanics that must be managed through various security systems.Gameplay involves viewing camera feeds, closing doors, activating lights, and using other tools to prevent intrusions. Players customize their challenge by selecting which characters are active and setting their difficulty, leading to a highly replayable experience with many possible scenarios.