Daddy's Nightmare is a mode for the game, Who's Your Daddy. It pits 1 Daddy against 3 Babies. The Babies goal in Daddy's Nightmare, is to kill Daddy before he can turn on the power, or once Mommy gets home.
In Daddy's Nightmare, the whole house will be dark. Daddy will have a Flashlight to increase his view distance, but will also risk being seen by the Babies.