Platform:
Red Dead Redemption: Undead Nightmare (PlayStation 3)

Red Dead Redemption: Undead Nightmare (PlayStation 3)

11 available, 13 wanted, 17 collection
Plasma Sword: Nightmare of Bilstein (Dreamcast)

Plasma Sword: Nightmare of Bilstein (Dreamcast)

7 available, 13 wanted, 16 collection
Simpsons: Bart's Nightmare, The (Super Nintendo)

The Simpsons: Bart's Nightmare (Super Nintendo)

8 available, 5 wanted, 8 collection
 

The Nightmare of Druaga: Fushigino Dungeon (PlayStation 2)

7 available, 4 wanted, 17 collection
Kirby: Nightmare in Dream Land (Game Boy Advance)

Kirby: Nightmare in Dream Land (Game Boy Advance)

5 available, 20 wanted, 32 collection
Knights in the Nightmare (Nintendo DS)

Knights in the Nightmare (Nintendo DS)

5 available, 15 wanted, 19 collection
Alone in the Dark: The New Nightmare (Dreamcast)

Alone in the Dark: The New Nightmare (Dreamcast)

6 available, 15 wanted, 17 collection
Knights in the Nightmare (PlayStation Portable)

Knights in the Nightmare (PlayStation Portable)

6 available, 9 wanted, 14 collection
Alone in the Dark: The New Nightmare (PlayStation)

Alone in the Dark: The New Nightmare (PlayStation)

6 available, 5 wanted, 11 collection
Alone in the Dark: The New Nightmare (PC)

Alone in the Dark: The New Nightmare (PC)

19 available, 0 wanted, 18 collection
Red Dead Redemption: Undead Nightmare (Xbox 360)

Red Dead Redemption: Undead Nightmare (Xbox 360)

10 available, 13 wanted, 22 collection
 

KISS Psycho Circus: The Nightmare Child (PC)

5 available, 1 wanted, 5 collection
KISS Psycho Circus: The Nightmare Child (Dreamcast)

KISS Psycho Circus: The Nightmare Child (Dreamcast)

2 available, 5 wanted, 7 collection
Nightmare Creatures (PlayStation)

Nightmare Creatures (PlayStation)

7 available, 2 wanted, 9 collection
Nightmare Creatures II (PlayStation)

Nightmare Creatures II (PlayStation)

3 available, 0 wanted, 4 collection
Nightmare Creatures (Nintendo 64)

Nightmare Creatures (Nintendo 64)

4 available, 6 wanted, 5 collection
Nightmare Creatures II (Dreamcast)

Nightmare Creatures II (Dreamcast)

3 available, 6 wanted, 6 collection
 

Yu-Gi-Oh!: Nightmare Troubadour (Nintendo DS)

2 available, 4 wanted, 3 collection
Simpsons: Bart's Nightmare, The (Genesis)

The Simpsons: Bart's Nightmare (Genesis)

1 available, 7 wanted, 4 collection