The name can either be pronounced 'wee-ja' or 'wee-gee'. Charles Kennard, founder of the company manufacturing the boards, claimed he learned the name "Ouija" from asking the board what it wanted to be called.
According to costume designer Mary Jane Fort, the cast and crew would often take breaks between shooting and use the Ouija board to jokingly predict the box office opening weekend numbers.
The film's tagline, "Keep telling yourself it's just a game," was used for several years as the advertising slogan for the Ouija board game.
Though there are many other horror movies about Ouija boards - some with the same title - this film is not officially a remake of any of them and tells its own story revolving around the titular game.
When re-shoots went underway, in the process of drastically changing Doris Zander's backstory, two new characters were created including her sister and mother. Lin Shaye, who plays Paulina Zander, was not in the original version of the film and was cast for the re-shot footage.
None of the actors portraying teenagers in the film were actually in their teens. The youngest actor was Olivia Cooke who was 21 at the time of filming.
The location where Laine goes to visit Paulina Zander is also known as Eichen House in MTV's hit TV show, Teen Wolf (2011), where Shelley Hennig, who plays Debbie, stars as Malia Tate/Hale.
Although this is the first film theatrically released starring Shelley Hennig, she filmed this after completing her work on Unfriended (2014) which was previously released as Cybernatural making it her proper film debut (technically). It would be theatrically released about 6 months after the release of this film.
In the original unaltered version of the film, Doris Zander had a much different look to her. In the original cut she took the appearance of a young girl with half of her face burnt while always carrying a doll. The re-shoots version is a rotting girl with sewn lips.
Some cast members are said to have experienced supernatural occurences since the production of the film Ouija ended. It is said to be influenced by the making of the film.
Erin Moriarty was cast in the film in an undisclosed role though she does not appear in the finished project. Her scenes were deleted when the film was reshot.
Another theory of where the name of the Ouija Board comes from is that it is the French and German for "Yes": Oui-ja. The Board has Yes and No answers as well as the alphabet.
Film debut of actors Ana Coto, Darren Kagasoff, Bianca A. Santos, and (technically) Shelley Hennig.
Although Sarah Morris is supposed to be Laine's younger sister in the film, in real-life the actress Ana Coto is actually 3 years older than Olivia Cooke, who plays Laine.