Realms of the Haunting
Trivia
3D Engine
Realms of the Haunting actually uses a modified version of the 3D engine featured in Normality, another game by Gremlin Interactive. Some interesting lighting effects were added, as well as a combat element (since Normality was a pure adventure game).
Actors
David Learner (Belial), a relatively popular actor already before this game was released, still acted afterwards, performing many theatrical roles. Emma Powell (Rebecca) acted in a couple of movies and plays, and currently works as a voice-over artist. For David Tuomi (Adam) this seems to have been his only acting job.
Controls
Although the later US release of Realms of the Haunting allowed the player to rebind some of the controls, the original UK release had no such facility. Fortunately, components of the US release can be utilised so as to allow the UK version to benefit from this feature. All the details and necessary files can be obtained here.
Information also contributed by Jaromir Krol and Shadowcat.