Also from our team — ToolYour: Best free online file converters, SEO toolkit, developer toolkit, resume builder & more.

WatchMind (Smart What to Watch) — movie and TV discovery app logoWatchMind
32% match · this device
Sign in to save your profile
Back to movies

Age-restricted? YouTube often blocks those trailers inside other sites. Use the button to watch on YouTube — you may need to sign in and confirm your age.

Watch on YouTube

Trailer from TMDb metadata; playback via YouTube. If the player shows a restriction, use "Watch on YouTube" above.

Community reviews (TMDb)

No written reviews for this title yet in our TMDb feed. Check the reviews section below, or add yours on themoviedb.org.

Your rating

Where to stream

Region US. Update where you watch

Rent, buy & download

See all store options
  • Amazon Video logoAmazon Video
  • Apple TV Store logoApple TV Store
  • Google Play Movies logoGoogle Play Movies
  • YouTube logoYouTube
  • Fandango At Home logoFandango At Home

Opens partner listings via The Movie Database — not affiliated with WatchMind.

400 Days

“They have time to kill.”

Released
2015-10-29
Rating

44%

Type

Movie

Runtime

1h 31m

MysteryScience FictionThriller

AI Analysis

400 Days (2015) — AI movie analysis

WatchMind AI

WatchMind AI generated this AI analysis of 400 Days (2015) — a movie tagged as Mystery, Science Fiction, and Thriller with dark and tense moods and fast-paced pacing.

dark moodtense moodfast-paced pacingsolo focused viewing

Story & themes: 4 would be astronauts spend 400 days in a land locked space simulator to test the psychological effects of deep space travel but, when something goes terribly wrong and they are forced to leave the simulation, they discover that everything on earth has changed. Is this real or is the simulation on a higher level tha… Our models also surface themes such as identity, conflict, and relationships from synopsis and genre signals.

Watch context: Best suited for solo focused viewing. Expect fast-paced storytelling (~91 min).

Community signal: TMDb members rate 400 Days 44% (502 votes) — polarizing or niche appeal for this movie.

AI verdict

400 Days suits viewers who want a dark and tense film — check the trailer and reviews before committing a full evening.

Preview on this device: 32% match — Matches your tense mood + thriller. Sign in to save your profile across devices.

Algorithmic AI analysis from genres, synopsis, pacing heuristics, and TMDb community scores — not a generative chatbot. How WatchMind works.

Insights

Audience & engagement

How WatchMind visitors interact with this title — views, saves, sentiment, and taste match when you're signed in, or a device preview while browsing. Aggregates are anonymous; last 30 days.

Early data — charts fill in as more people explore this title.

TMDb audience score

44%

from 502 TMDb votes

Taste match (this device)

32%match

Preview from browsing on this browser — not saved to an account yet.

Matches your tense mood + thriller

Sign in to save your profile →
  • Your rating—
  • Watch queueNot saved

WatchMind sentiment

No thumbs or dismissals yet. Rate this title to help others see likeness trends.

Dismissals
0

Engagement breakdown

Page views0
Saved to queue0
Trailer plays0
Where to watch clicks0
Related title clicks0

0 unique visitors · no audience notes yet

Views trend (14 days)

2026-05-11: 0 views2026-05-12: 0 views2026-05-13: 0 views2026-05-14: 0 views2026-05-15: 0 views2026-05-16: 0 views2026-05-17: 0 views2026-05-18: 0 views2026-05-19: 0 views2026-05-20: 0 views2026-05-21: 0 views2026-05-22: 0 views2026-05-23: 0 views2026-05-24: 0 views
05-1105-24

Daily title page views on WatchMind

Synopsis

4 would be astronauts spend 400 days in a land locked space simulator to test the psychological effects of deep space travel but, when something goes terribly wrong and they are forced to leave the simulation, they discover that everything on earth has changed. Is this real or is the simulation on a higher level than they could have ever imagined?

Quick facts

Type
Movie
Status
Released
Release date
2015-10-29
Runtime
1h 31m
TMDB rating
4.4
TMDB ID
332502

Watch & discovery tips

  • Read TMDb member reviews in the reviews section, and audience tips from other WatchMind visitors in Audience notes.
  • Use Rent, buy & download for official stores; offline viewing is usually inside their apps.
  • Browse trending and top-rated movies from the main Movies page.
  • Add titles to your watch queue from this page — order matters; the top pick can surface on your home page when you're logged into the same browser session.

Frequently asked questions

Where can I watch 400 Days (2015)?

400 Days is available for discovery on WatchMind. You can find official links to rent, buy, or stream from licensed digital stores like Apple TV and Amazon in our "Where to Watch" section.

Is there an official trailer for 400 Days?

Yes, you can watch the official trailer for 400 Days directly on this page. We pull the latest video metadata from TMDb and play it via YouTube integration.

What is 400 Days about?

4 would be astronauts spend 400 days in a land locked space simulator to test the psychological effects of deep space travel but, when something goes terribly wrong and they are forced to leave the... This is the official synopsis available via TMDb community metadata.

Is there an AI analysis for 400 Days?

Yes. WatchMind publishes an AI analysis on this page — tone, pacing, audience fit, and community scores from TMDb metadata and recommendation models (not a chatbot). Scroll to the AI Analysis section or read the meta description summary.

How long is the movie 400 Days?

The official runtime for 400 Days is approximately 91 minutes.

Cast & crew

Names and photos from The Movie Database (TMDb). Follow links on themoviedb.org for full filmographies.

Audience notes

Quick tips, watch-order ideas, and “worth it?” takes from other WatchMind visitors — not from TMDb. Reply to continue a thread, tap Helpful to surface useful notes, and keep things kind — no spoilers in the first line when you can help it.

0 / 2000

Discussion0 notes

No notes yet — be the first to leave a suggestion for the next viewer.

Community reviews

Written by TMDb members — same catalogue as our movie & TV metadata. API terms

No written reviews are available for this title in TMDb yet. Check back later or open the title on themoviedb.org.

    More to explore

    Hand-picked from TMDb similar and recommended lists for 400 Days. Each link opens a full WatchMind page with synopsis, trailer, community reviews, and official store links—so you can compare tone and audience overlap before you pick what to watch next.

    About WatchMind AI — Smart What to Watch

    Smart What to Watch (smartwhattowatch.com) is the home of WatchMind — the free AI movie and TV recommendation app also known as WatchMind AI.

    WatchMind AI (WatchMind) recommends movies and TV using AI-assisted algorithms — taste profiles, semantic matching, and embedding similarity process your browsing, queue saves, ratings, and engagement into personalised picks: For You rails, daily suggestions, mood feeds, and match scores. Trailers, TMDb review excerpts, and licensed where-to-watch links support each pick. We do not host or stream full films or episodes.

    Browse movies, TV series, and curated feeds such as Story Hunt. Title pages include synopses, cast, where-to-watch data from TMDb, and structured data for search engines. Personalised rails and your profile use optional Google sign-in (name, email, and account ID only to identify you — see the homepage section "What we collect and why"). The catalogue remains readable without an account.

    Privacy Policy · Terms of Service. Catalogue metadata from TMDb. Sitemap: https://smartwhattowatch.com/sitemap.xml.