Steamboy poster

Steamboy

"He will save the future."

Movie PG-13 2004 2h 6m 6.9 /10
Directed by Katsuhiro Otomo

In a steam drenched 1860s Britain, a young inventor named Ray finds himself pulled into a violent contest over a revolutionary steam device. This invention promises power beyond anything built before, drawing in industrial magnates, reformers, and shadowy factions who will stop at nothing to... Read more

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Streaming availability last verified: January 24, 2026

About Steamboy

In a steam drenched 1860s Britain, a young inventor named Ray finds himself pulled into a violent contest over a revolutionary steam device. This invention promises power beyond anything built before, drawing in industrial magnates, reformers, and shadowy factions who will stop at nothing to control it. Ray must balance his curiosity with the responsibility that comes with such power, and his choices ripple through families, factories, and streets alike. As allegiances shift and threats escalate, the boy discovers that progress carries a heavy moral cost, and that safeguarding humanity may demand more than clever gadgets. He grapples with pressure from a power hungry mentor and a fierce rival.

Directed by Katsuhiro Otomo, Steamboy released in 2004 as a high profile animated feature. The project stems from Otomo and writer Sadayuki Murai’s original concept, produced with a budget around 26 million dollars. It marks Otomo’s return to big scale animation after his landmark work on Akira, and it emphasizes elaborate machinery, period detail, and a sweeping action ethic.

It stands out for its ornate steampunk aesthetic and sweeping set pieces, marking Otomo's ambitious return to feature filmmaking. The film helped popularize a British steampunk vibe within anime and raised the bar for period design and mechanical imagination. Its visual language continues to influence designers and animators exploring speculative tech in historical settings.

Critics offered a mix of praise and critique, applauding the visuals and scope while noting pacing and narrative complexity. Central themes explore the lure and danger of progress, the moral costs of innovation, and how power struggles ripple through families and cities. The movie invites audiences to weigh invention against human costs.

Awards: The film earned recognition at international festivals and received nominations for its animation craft, though it did not dominate major awards. It remains a notable entry in Otomo's body of work for its technical ambition and storytelling risk, underscoring Steamboy's place in early 2000s anime.

Details

Release Date
July 17, 2004
Runtime
2h 6m
Rating
PG-13
User Ratings
472 votes
Type
Movie
Genres
Animation, Fantasy, Science Fiction
Country
Japan
Studio
Bandai Visual +4 more
Budget
$26,000,000
Box Office
$18,900,000
External Links
View on IMDB

Official Trailer

Cast

Keiko Aizawa

Keiko Aizawa

Ray's Mother (voice)

Aiko Hibi

Aiko Hibi

Thomas (voice)

Manami Konishi

Manami Konishi

Scarlett O'Hara St. Jones (voice)

Anne Suzuki

Anne Suzuki

James Ray Steam (voice)

Sanae Kobayashi

Sanae Kobayashi

Emma (voice)

Katsuo Nakamura

Katsuo Nakamura

Dr. Lloyd Steam (voice)

Masane Tsukayama

Masane Tsukayama

Dr. Edward 'Eddy' Steam (voice)

S

Satoru Sato

Archibald Simon (voice)

Susumu Terajima

Susumu Terajima

Alfred Smith (voice)

Kiyoshi Kodama

Kiyoshi Kodama

Robert Stephenson (voice)

Director: Katsuhiro Otomo

Written by: Sadayuki Murai

Frequently Asked Questions

Steamboy is not currently available on streaming subscription services, but you can rent or buy it on Apple iTunes, Google Play, Vudu, and Amazon Video.

Yes, you can rent on Apple iTunes, Google Play, Vudu, and Amazon Video or buy on Apple iTunes, Google Play, Vudu, and Amazon Video.

With a rating of 6.9/10 from 472 viewers, Steamboy is considered decent by viewers and may be worth checking out.

In a steam drenched 1860s Britain, a young inventor named Ray finds himself pulled into a violent contest over a revolutionary steam device. This invention promises power beyond anything built before, drawing in industrial magnates, reformers, and shadowy factions who will stop at nothing to cont...

Steamboy stars Keiko Aizawa, Aiko Hibi, Manami Konishi, Anne Suzuki, and Sanae Kobayashi.

Steamboy was directed by Katsuhiro Otomo.

Steamboy was released on July 17, 2004.

Steamboy is a Animation, Fantasy, and Science Fiction film.

Keiko Aizawa voices Ray's Mother in Steamboy.

Aiko Hibi provides the voice for Thomas.

Manami Konishi voices Scarlett O'Hara St. Jones.

The film is set in 1860s Britain and follows James Ray Steam, a boy inventor, as he gets caught in a conflict over steam power. James Ray Steam is voiced by Anne Suzuki.