Other Game Mechanic
Player obtains a new skill of hiding their ghostly presence around the characters
helps stop the fear bar from increasing when players must pass by characters
Skill will have a cooldown to not be overly used
Characters
adding other ghost AI characters that are trying to scare the humans away by creating more tasks (to increase the difficulty)
Systems
a save system for each level
option for level selections from the main menu after completing the entire game at least once.