ChristmasWhen the PC clock/calendar reads 25 Dec, a Christmas tree appears in the great hall of the castle.
SoundThe game featured digital sounds with the PC Speaker. However, the PC version sounded way inferior to the Mac version.
T-shirtsThere was a Dark Castle and Beyond Dark Castle t-shirt and sweatshirt offer that came with the game.
Contributed by Olivier Masse (421) on May 08, 1999. [revised by : Patrick Bregger (98698)]. -- edit trivia