The only live-action show to air on the Warner Brothers program "Kids' TV", and its link with the Cartoon Network one Toonami.
For most stories directly based on an R.L. Stine book (not "Scareful What You Wish for" or "School Spirit", nor "Tangled Web" or "Four Eyes" which were only inspired by certain ideas in a book), at least one character, usually a friend, had a name and often a gender switch. Most notably, the three main characters in "My Name is Evil" had initials that matched their book counterparts' but changed from girls to boys (the best friends dropping from triplets to a pair who were unrelated), and the cold love interest from a boy to a girl.
Some of the hastily-viewed items featured in the opening include (in this order): a clown-masked robber from "Tangled Web", aliens from "Four Eyes", a party dummy from "Full Moon Halloween", a funhouse dummy from "My Name is Evil", the werewolf from "Full Moon Halloween", the moon that was the ending shot in "Four Eyes", the exploding crystal ball from "My Name is Evil", the document from "Fear Games", the titular machine from "The Howler", the coin and Secrets of Hypnosis book from "Don't Forget Me", Buddy's doll head from "Scareful What You Wish For", the diary from "Dear Diary, I'm Dead", the doll from "Camp Nowhere", the Fate Master's Lucky Charm case from "Locker 13", and the trophy from "School Spirit".
The nightmare room was canceled after one season because of low ratings as the show was not as commercially successful as Goosebumps plus this show wasn't as hit like Goosebumps and viewers found the show a bit too scary and way darker and more scarier than Goosebumps so the show was canceled after one season because of that.