I've been busy trying to improve the experience of Poltergeist Prodigy and have resolved some bugs, boosted performance, and even added a new 'Summon' mechanic.
New feature: A new haunting ability 'Summon' has been added. On the Learning to Haunt and Think We're Alone Now levels, you can find a summoning point. If you interact with this summoning point you will summon a creature who will automatically wander the level and haunt NPCs.
Bug fix: On the Learning to Haunt level, a teacher NPC's walk animation would occasionally fail to trigger.
Bug fix: On the 666 to Spooksville level the female NPCs would scream with a man's voice.
Bug fix: Once the Pulse haunting ability is unlocked you could trigger it whilst on the Options menu.
Bug fix: Once the Possession haunting ability is unlocked you could trigger scares and unpossess of an NPC whilst in the Options menu.
Performance improvement: Code refactoring and clean up to improve performance.