Skip to content

Featured Popular Top Rated Upcoming Now Playing

Featured Popular Top Rated Airing Today On The Air

Action Adventure Animation Comedy Crime Documentary Drama Family Fantasy History Horror Music Mystery Romance Science Fiction TV Movie Thriller War

Search movies and TV series

Search movies and TV series

Featured Popular Top Rated Upcoming Now Playing

Featured Popular Top Rated Airing Today On The Air

Action Adventure Animation Comedy Crime Documentary Drama Family Fantasy History Horror Music Mystery Romance Science Fiction TV Movie Thriller War

Every movie and series, one place to find it.

Search movies and TV series

Loading content…

Discover where to watch movies and TV series online. Browse trending titles, streaming availability, ratings, trailers, cast and full episode guides — all in one place.

Movies

Featured
Popular
Top Rated
Upcoming
Now Playing

TV Series

Featured
Popular
Top Rated
Airing Today
On The Air

Discover

Trending
Free to Watch
Browse Genres
Search

© 2026 Watch Free Online Movies. All rights reserved.

This product uses the TMDB API but is not endorsed or certified by TMDB. Watch Free Online Movies does not host or stream any media — it links to where titles are legally available.

Loading title details…

Super Giant: The Mysterious Spacemen's Demonic Castle poster

Super Giant: The Mysterious Spacemen's Demonic Castle(1957)

October 1, 195751m

Science Fiction Action

65%User score 65 percent

User Score

2 votes

Overview

The 3rd Super Giant film, in which he saves Earth from the threat of the reptile-like Kapia Aliens.

Director: Teruo Ishii
Writers: Ichirō Miyagawa

Top Billed Cast

Ken Utsui
Super Giant
M
Masao Takamatsu
R
Ryô Iwashita
M
Makoto Abe
S

More Like This

Recommendations based on this film

58%User score 58 percent

Superman Returns

2006 · Science Fiction · Action

64%User score 64 percent

Monsters of Man

2020 · Science Fiction · Action

59%User score 59 percent

Message from Space

1978 · Action · Adventure

74%User score 74 percent

Superman II: The Richard Donner Cut

2006 · Science Fiction · Action

62%User score 62 percent

Attack on Titan II: End of the World

2015 · Horror · Science Fiction

61%User score 61 percent

Osiris

2025 · Science Fiction · Action

63%User score 63 percent

Monster Hunters

2020 · Science Fiction · Action

64%User score 64 percent

Space Battleship Yamato

2010 · Science Fiction · Action

62%User score 62 percent

Occupation: Rainfall

2020 · Science Fiction · Action

64%User score 64 percent

Code 8 Part II

2024 · Science Fiction · Action

68%User score 68 percent

Halo: Nightfall

2014 · Science Fiction · Action

72%User score 72 percent

Transformers: Rise of the Beasts

2023 · Science Fiction · Adventure

72%User score 72 percent

Superman

1978 · Science Fiction · Action

79%User score 79 percent

Guardians of the Galaxy

2014 · Action · Science Fiction

62%User score 62 percent

Afterburn

2025 · Action · Science Fiction

66%User score 66 percent

Returner

2002 · Action · Adventure

70%User score 70 percent

Parasyte: Part 2

2015 · Science Fiction · Horror

66%User score 66 percent

Solo: A Star Wars Story

2018 · Science Fiction · Adventure

68%User score 68 percent

Star Trek Beyond

2016 · Action · Adventure

61%User score 61 percent

Real Men

1987 · Comedy · Science Fiction

Super Giant: The Mysterious Spacemen's Demonic Castle (1957) | Watch Free Online Movies

Shōzaburō Date

Akira Nakamura

Hiroshi Asami

Noriko Katsuma

Kōtarō Sugie

Fujie Satsuki

Ryûji Shima

Yukio Obama

Yukio Sayama

Yutaka Maki

Daijiro Kikukawa

Shinji Suzuki

Yasuhiko Todo

Toshi Komori

Takashi Yamaguchi

Shūji Kawabe

Where to Watch

No streaming options are listed for US right now. Availability changes often — check back soon.

Facts

Status: Released
Original title: スーパー・ジャイアンツ怪星人の魔城
Original language: Japanese
Production: Shintoho Company