The album was also sold in amusement park gift stores at Busch Gardens Williamsburg, and in other retailers of Halloween-related products, such as Mr Fun's, a chain of costume shops based in Cuyahoga Falls, Ohio.

[2] Realm of Shadows, along with their previous release, Born of the Night, helped establish the band's reputation in the haunted attraction and gothic music industries.

[4][2][5][6][3] In an October 2000 interview in The Plain Dealer, band founder, Edward Douglas estimated that about 400 haunted houses and amusement parks were using the music including Cedar Point and Busch Gardens Tampa.

[2] In an article in Cleveland Magazine Adrian LePeltier, Director of Show Development at Universal Florida, called the music "the most horrifying he'd ever heard," convincing him to use it in the park's Halloween Horror Nights event.

[5] Daniel Hinds of Outburn Magazine said the album "took the band's brand of symphonic horror to a new level," commenting on that the ambient, synth-based instrumentals were a more subtle type of "terror.