The trailer features footage from the original Japanese film, called Kairo. One shot in particular features a plane crashing. The shot was re-done for the final film
Kirsten Dunst was set to star originally and was supposed to shoot before returning to the Spider-Man 2 (2004) set.
Wes Craven was once set to direct, but bailed out, which led the film to be officially canned at one point
Bob Weinstein canceled the film considering it to be too similar to The Ring.
In an interview with Fangoria magazine, the director assured readers that key scenes from the original movie, in particular the tower jump suicide, would be retained. This scene is absent from the theatrical version. However, the scene is present in the unrated version
The opening scene in the library was shot in five hours.