Garfield's Nightmare happened in 2007.
Nightmare Circus happened in 1996.
Castle Nightmare happened in 1984.
Nightmare Creatures happened in 1997.
Knights in the Nightmare happened in 2008.
Basketball Nightmare happened in 1989.
Nightmare LPMud happened in 1992.
Nightmare of Eden happened on 1979-12-15.
Nightmare Creatures II happened in 2000.
Nightmare - Atmosfear series - happened in 1991-09.
Alan Wake's American Nightmare happened in 360.
A Nightmare on Elm Street - video game - happened in 1990.
No not really but it does happen to people