Nightmare in the Dark

Snow Bros. 3: With New Hellspawn.

Unused Music
Several unused audio tracks are included in the game; a short loop and two fanfares ( and ). The game's music begins at, so two of these appear second and third in the index, perhaps suggesting they were composed early in development. The third is situated between the game opening tune and the stage intro jingle and could be speculated to be an early title screen fanfare. All of these tracks can be heard using M1 or the Universe BIOS's jukebox feature.

Anti-Piracy
Nightmare in the Dark is one of just five Neo Geo titles which perform a slot check in an attempt to identify whether the game is running on bootleg hardware. This checks for a valid date in the calendar and that the hardware is internally consistent&mdash;specifically, that the game is not running in AES mode on MVS hardware.

When running with BIOS_DEVMODE set ( in RAM to, or via Universe BIOS/emulator settings), the game will report the version of the slot check program included, first on startup and again on first coin insertion.



If the slot check fails, e.g. because BIOS_MVS_FLAG ( in RAM) has been set to (AES mode), the game will lock up with the following warning: