"Scooby-Doo on Zombie Island" is not rated R; it is rated G (for general audiences). This animated movie, released in 1998, features the Mystery Inc. gang encountering real supernatural elements, including zombies and voodoo. The film is intended for children and family audiences, combining humor with mild thrills. If you came across a mention of an R rating, it may have been a mistake or confusion with another film. Overall, it remains a beloved classic in the Scooby-Doo franchise.

As of my last knowledge update in October 2023, "Scooby-Doo on Zombie Island" is available for streaming on HBO Max. However, availability can vary by region and over time, so it's recommended to check your local streaming services or platforms like Amazon Prime Video, Google Play, or Apple TV for rental or purchase options.

"Scooby-Doo on Zombie Island" is often considered the darkest film in the Scooby-Doo franchise. Released in 1998, it features a more mature tone and darker themes compared to earlier series. The story revolves around the Mystery Inc. gang investigating a haunted island that is home to real zombies and supernatural elements, a departure from the typical "masked villain" formula. The film explores themes of fear and trust and includes moments that can be unsettling for younger viewers, making it stand out as a more intense entry in the series.

"Scooby-Doo on Zombie Island" is not the first movie in the Scooby-Doo franchise, but it is the first direct-to-video animated film featuring the gang. Released in 1998, it marked a significant shift in tone and style for the series, incorporating more mature themes and a darker atmosphere compared to earlier television episodes. The film was well-received and helped to revitalize interest in the franchise, leading to more direct-to-video films and series adaptations.