The duration of Nightmare in Blood is 1.5 hours.
The duration of Nightmare in Wax is 1.52 hours.
The duration of Nightmare Beach is 1.5 hours.
The duration of The Nightmare Man is 1800.0 seconds.
The duration of Darwin's Nightmare is 1.78 hours.
The duration of The Devil's Nightmare is 1.57 hours.
The duration of Nightmare Castle is 1.68 hours.
The duration of Companions in Nightmare is 1.67 hours.
The duration of Red Nightmare is 1740.0 seconds.
The duration of Nightmare Sisters is 1.38 hours.
The duration of Nightmare Detective is 1.75 hours.
The duration of Nightmare Cafe is 3600.0 seconds.
The duration of An Insomniac's Nightmare is 1860.0 seconds.