The Manhattan Project
“Paul Stevens' high school science project has gotten a little out of hand. He just built an atomic bomb. Now he's got 11 hours to make sure it doesn't work.”
We checked 8 streaming services in India on 05 Jun 2026 at 14:49 IST
About
A gifted high school student steals plutonium from the secret nuclear weapons facility in his home town in order to construct his own nuclear bomb, win a national science fair, and expose the government's secrets.
Cast
John Lithgow
as John Mathewson
Christopher Collet
as Paul Stephens
Cynthia Nixon
as Jenny Anderman
Jill Eikenberry
as Elizabeth Stephens
John Mahoney
as Lt. Col. Conroy
Richard Jenkins
as Radiation Controls Officer
Sully Boyar
as Night Guard
Timothy Carhart
as Relief Guard
Gregg Edelman
as Science Teacher
JD Cullum
as Eccles (as John David Cullum)
Abraham Unger
as Roland (as Abe Unger)
Robert Sean Leonard
as Max
Fred Melamed
as Howard
Ned Eisenberg
as C-4 Guy (uncredited)
Richard Council
as Government Aide
Robert Schenkkan
as Government Aide
Steve Blum
as Laser Efficiency Kid (as Richard Cardona)
Sarah Burke
as Jenny's Parent
Warren Manzi
as Day Attendant
Paul Austin
as General
Where does The Manhattan Project rank today?
The Manhattan Project is #6924 on the CineFlixo Daily Streaming Charts today.
- Highest: #6924
- Top 10: 0 days
- Top 100: 0 days
Watch The Manhattan Project Online Free in HD
Stream The Manhattan Project online free in HD on CineFlixo. A popular science fiction and thriller movie originally produced in Inglés and released in 1986, it's earned a solid 6.2/10 from 118 viewers worldwide.
About The Manhattan Project
“Paul Stevens' high school science project has gotten a little out of hand. He just built an atomic bomb. Now he's got 11 hours to make sure it doesn't work.”
A gifted high school student steals plutonium from the secret nuclear weapons facility in his home town in order to construct his own nuclear bomb, win a national science fair, and expose the government's secrets. Running 118 minutes.
The Manhattan Project Cast and Characters
The cast features John Lithgow (as John Mathewson), Christopher Collet (as Paul Stephens), Cynthia Nixon (as Jenny Anderman), Jill Eikenberry (as Elizabeth Stephens), and John Mahoney (as Lt. Col. Conroy). Their performances are a major reason The Manhattan Project has built such a passionate audience.
Where to Watch The Manhattan Project Online
On CineFlixo you can watch The Manhattan Project free — no account, no credit card, no ads in the middle of the show. We stream the full film in 720p / 1080p HD, with subtitles when available, on any device: phone, tablet, laptop, or smart TV browser.
▶ Watch The Manhattan Project NowWhy People Are Watching The Manhattan Project
The Manhattan Project flies under the radar but it deserves your attention. What makes it work is tight pacing that earns its twists and world-building that respects the audience's intelligence. If you enjoy Inglés storytelling that doesn't follow the same tired beats, this is the kind of film you'll end up recommending to friends.
Frequently Asked Questions about The Manhattan Project
Where can I watch The Manhattan Project online for free?
You can watch The Manhattan Project online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How long is The Manhattan Project?
The Manhattan Project runs for 118 minutes (about 2 hours).
Is The Manhattan Project good? What's the rating?
The Manhattan Project holds a 6.2/10 rating based on 118 reviews — a solid pick if the genre interests you.
Who is in the cast of The Manhattan Project?
The main cast includes John Lithgow, Christopher Collet, Cynthia Nixon, and Jill Eikenberry, plus a strong supporting ensemble.
Is The Manhattan Project available in Inglés?
Yes — The Manhattan Project was originally produced in Inglés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was The Manhattan Project released?
The Manhattan Project was released in 1986.
Do I need an account to watch The Manhattan Project on CineFlixo?
No. CineFlixo is free and you can watch The Manhattan Project without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Similar Movies You Might Like
If you enjoyed The Manhattan Project, check out Rollercoaster, Airport, The Invisible Man, Logan's Run, and Project: ALF.
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Frequently Asked Questions
Common questions about The Manhattan Project
Where can I watch The Manhattan Project for free?
You can watch The Manhattan Project (1986) online for free on CineFlixo. Just click "Watch Free" on this page to start streaming instantly — no account, subscription, or downloads required.
What is The Manhattan Project about?
The Manhattan Project is a Science Fiction/Thriller English-language film. A gifted high school student steals plutonium from the secret nuclear weapons facility in his home town in order to construct his own nuclear bomb, win a national science fair, and expose the government's secrets.
When was The Manhattan Project released?
The Manhattan Project was released on June 13, 1986. It has a runtime of 1h 58m. The film was produced by Gladden Entertainment.
Who stars in The Manhattan Project?
The Manhattan Project stars John Lithgow, Christopher Collet, Cynthia Nixon and Jill Eikenberry. The full cast list is available in the Cast section above.
Is The Manhattan Project available in HD?
Yes, The Manhattan Project is available to stream in high definition (HD) on CineFlixo. Our players automatically deliver the best quality your connection supports — no extra setup needed.