The War with Grandpa
2020, English. Directed by Tim Hill.
Old school vs new cool.
Peter is thrilled that his Grandpa is coming to live with his family. That is, until Grandpa moves into Peter's room, forcing him upstairs into the creepy attic. And though he loves his Grandpa, he wants his room back - so he has no choice but to declare war.
- Runtime
- 1h 38m
- Post-credits
- Yes, stay
- Language
- English
- Rated
- U
Start now and it ends at ….
Popcorn Flick
Fun if you don’t overthink it.
6.4/10 from 1,112 TMDB viewer ratings.
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Where to watch The War with Grandpa
The War with Grandpa is streaming on Amazon Prime Video in India.
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Amazon VideoAvailability in India as of 12 November 2026. Streaming data by JustWatch.
Cast & crew
Details
- Released
- 20 November 2020
- Country
- United States of America
- Written by
- Matt Ember, Tom J. Astle
- Budget
- $18M
- Box office
- $43M
Check ratings elsewhere
News & fan talk
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The War with Grandpa: quick answers
Is The War with Grandpa worth watching?
Our verdict is Popcorn Flick: Fun if you don’t overthink it. It scores 6.4/10 from 1,112 TMDB viewer ratings.
How long is The War with Grandpa?
The War with Grandpa runs 98 minutes (1h 38m).
Does The War with Grandpa have a post-credits scene?
Yes. The War with Grandpa has a scene during the credits, so don’t leave early.
The War with Grandpa parents guide: is it suitable for kids?
The War with Grandpa is rated U in India. That rating means it is generally fine for children.
Which OTT platform is The War with Grandpa on?
The War with Grandpa is streaming on Amazon Prime Video in India. (Checked 12 November 2026.)
What movies are like The War with Grandpa?
If you liked The War with Grandpa, try Ramona and Beezus, Tom & Jerry, Judy Moody and the Not Bummer Summer.
Who directed The War with Grandpa?
The War with Grandpa (2020) was directed by Tim Hill and stars Robert De Niro, Uma Thurman, Rob Riggle.