YMMV: Mad Father
- Darkness-Induced Audience Apathy: When you learn the truth about every person in the game, it'll make you upset there's no ending where everybody dies.
- Fanon: Various fan theories have been concocted attempting to tie Mad Father to Misao, which is set in the same universe in the future. Some of these include Ogre being Onigawara, Aya or her clone being the Library Girl, and Alfred Drevis being the Mad Scientist.
- The eyeless blonde that Aya helps almost looks like Viola. The only difference is that this blonde has blue eyes while Viola has green.
- Hell Is That Noise: Aaaayaaaa... Doko ni iru no kanaaaa~?Translation
- Narm: Some of the scares can come off as this thanks to the limited graphics.
- Aya's character model can often fall victim to Dull Surprise and her mother's has slightly crossed eyes in some of the shots of her.
- The Woobie: Aya and many of the Doctor's victims.