Invasion of the Neptune Men
1961 · Movie · 74 min · ★ 3.1 · 21% critics
When metallic aliens from Neptune threaten Earth, a caped hero teams up with scientists and a group of kids to push back the attacks. As panic spreads, an experimental electric barrier is built to protect cities, but the invaders keep finding new ways to strike and test humanity’s defenses.
Also known as Iron Sharp
Where to watch
Watch free on Tubi — also streaming on AMC+.
1 hour to watch.
Stream (included)
Streaming availability and prices may be inaccurate or change — verify with the provider before subscribing.
unSUB's subscription recommendations are informational only, not financial advice.
More value for your money
Similar titles, ranked by watch-hours per subscription dollar.
Details
- Original title
- 宇宙快速船
- Years
- 1961
- Release date
- 1961-07-19
- Language
- Japanese
- Runtime
- 74 min
- Max quality
- HD
- Critic score
- 21/100
- TMDB rating
- 3.1/10 (28 votes)
About
You may enjoy this if you like campy, kid-focused 1960s alien-invasion romps like Prince of Space and don’t mind bargain-bin effects; Not for you if you want polished thrills, subtle performances, or consistently serious tension.
Pros: goofy retro sci-fi charm; brisk, eventful pace; occasional fun moments | Cons: rough acting and dubbing; repetitive stock footage; annoying kid antics
Themes
- alien invasion
- planet neptune
Cast & crew
Sonny Chiba
as Tachibana - Scientist / Space Chief
Shinjirō Ehara
Ryuko Mizukami
as Tanigawa Yoko
Mitsue Komiya
Seiichirō Kameishi
- SO
Shiro Okamoto
Rinichi Yamamoto
- KM
Kappei Matsumoto
as Tanigawa Hiroshi
Takashi Kanda
Ken Sudo
Directed by Koji Ota