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The War with Grandpa

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Videos & Photos

  • Official Trailer
  • Trailer 1

Movie Info & Cast


Sixth-grader Peter (Oakes Fegley) is pretty much your average kid-he likes gaming, hanging with his friends and his beloved pair of Air Jordans. But when his recently widowed grandfather Ed (Robert De Niro) moves in with Peter's family, the boy is forced to give up his most prized possession of all, his bedroom. Unwilling to let such an injustice stand, Peter devises a series of increasingly elaborate pranks to drive out the interloper, but Grandpa Ed won't go without a fight. Soon, the friendly combatants are engaged in an all-out war with side-splitting consequences. Based on the award-winning book by Robert Kimmel Smith, The War with Grandpa is a hilarious family comedy featuring an all-star supporting cast: Christopher Walken, Uma Thurman, Rob Riggle, Cheech Marin, Laura Marano and Jane Seymour.


  • Robert De Niro
  • Uma Thurman
  • Rob Riggle
  • Oakes Fegley
  • Cheech Marin
  • Jane Seymour
  • Christopher Walken
  • Laura Marano
  • Colin Ford
  • T.J. McGibbon

Atom User Reviews

Verified Review

We were eager to get out and get back to the movie theater even if it maybe to see a mediocre movie And that is exactly what this was. The premise seemed like it had potential for some good laughs but often the ‘comedy’ was forced and not funny. At times I just wanted to bytch slap the little kid for being such a whiny brat and let’s face it, Robert De Niro hasn’t made a decent movie since ‘Meet The Fockers’.. Is this movie entertaining? Yeah, kinda... But if we weren’t living in a Covid world right now and movies were being pumped out at a normal pace, I would skip this movie in a heartbeat and just watch it at home when I came out. Anyone giving it more than 2-3 stars clearly is just happy to see a movie again and not truly giving you an honest review.

David W
Verified Review

I bought this movie by mistake and didn’t get my refund lol

Marco H


Oct 11, 2020

Despite the efforts of an A-list cast led by Robert De Niro, this so-called family entertainment is barely passable piffle.

Peter Travers
ABC News
Oct 9, 2020

There are some random chuckles along the way . . . . For the most part, though, The War with Grandpa seems like the sort of brightly-lit disposable family comedy that fills the Disney Channel schedule, only with an insanely overqualified cast.

Metacritic review by Alonso Duralde
Alonso Duralde
Oct 8, 2020

The War with Grandpa will probably prove riotously funny to small fry while providing some compensations to adults with its supremely overqualified cast.

Metacritic review by Frank Scheck
Frank Scheck
The Hollywood Reporter