"The Polar Express" faced controversy primarily due to its use of motion capture technology, which some critics argued created an unsettling "uncanny valley" effect, making the animated characters appear eerily lifelike yet not quite right. This raised concerns about the emotional resonance and realism of the characters. Additionally, some parents and educators debated the film's themes regarding belief in Santa Claus, with some feeling it could mislead children about the realities of Christmas. Despite this, the film has been praised for its visual innovation and storytelling.

As of October 2023, "The Polar Express" is not available on Netflix or Disney+. It is primarily available for streaming on platforms like HBO Max and can also be rented or purchased through services like Amazon Prime Video, Google Play, and Apple TV. Availability may vary by region, so it's always a good idea to check the specific platform in your area for the most accurate information.

As of now, there is no official sequel to "The Polar Express." The original film, released in 2004 and directed by Robert Zemeckis, is based on the children's book by Chris Van Allsburg. While there have been discussions and interest in creating sequels or similar projects, none have been produced or announced. The story remains a standalone classic, celebrated for its animation and holiday themes.

"The Polar Express" is generally considered appropriate for children ages 5 and up. The movie, based on the beloved children's book by Chris Van Allsburg, features themes of belief, adventure, and the magic of Christmas. While it is suitable for young audiences, some scenes may be intense for very young children, such as the train's journey and certain darker moments. Parents are encouraged to watch it with their children to discuss its themes. Overall, it is a family-friendly film that can be enjoyed by viewers of all ages.