The War with Grandpa

Movie review by
Tara McNamara, Common Sense Media
The War with Grandpa Movie Poster Image
Parents recommendPopular with kids
Mischievous slapstick comedy has multigenerational appeal.
  • PG
  • 2020
  • 94 minutes

Parents say

age 8+
Based on 12 reviews

Kids say

age 8+
Based on 18 reviews

Did this review miss something on diversity?

Research shows a connection between kids' healthy self-esteem and positive, diverse representations in books, TV shows, and movies. Want to help us help them? Suggest a diversity update

A lot or a little?

The parents' guide to what's in this movie.

Educational Value

Intended to entertain rather than educate.

Positive Messages

Positive message about value that relationship with grandparents can add to kids'/people's lives. Also a lesson about why war/violent conflict resolution should always be avoided.

Positive Role Models & Representations

While Grandpa does engage in "war" with his grandson, he never reacts to the pranks and sabotage with yelling. No diversity of note within main characters/cast.

Violence & Scariness

Slapstick live-action violence that would result in serious injury or even death in real life: being electrocuted and multiple falls from high places onto hard surfaces. A "fight "involves a lot of swinging and food being thrown. Remarks about a bully punching a kid in the face. A woman tackles and threatens a minor with her fist but doesn't actually hit him.

Sexy Stuff

It's implied that a teen couple is interrupted while kissing, but actual kissing isn't shown. A man's pants are accidentally pulled off; glimpse of his underwear from the backside.


Language includes "wiseass," "hell," "suck," "dummy," and the word "booby trap" being turned into "boobies." A kid says "shut up" and is instantly reprimanded by a younger child that "shut up is a bad word." Some bathroom humor. 


Brands and stores featured positively include Fry's Electronics, Skyzone, Nissan Pathfinder, and Lyft. 

Drinking, Drugs & Smoking

Adults spike their own drinks with hooch from a flask.

What parents need to know

Parents need to know that The War with Grandpa is a family comedy based on Robert Kimmel Smith's 1984 book about a resentful boy named Peter (Oakes Fegley) who pranks his grandfather (Robert De Niro) in hopes that he'll move out of his room. Eventually, Grandpa engages, and the two start a "war" that actually ends up creating a bond between them. If you can suspend your disbelief, it's funny enough, and it promotes the value that a relationship with grandparents can add to kids' lives. But Peter's tactics come off more mean-spirited on-screen than they did on the page. His "pranks" cause many accidents for Grandpa and his elderly friends, including electrocution and falls that in real life would cause broken bones, cracked skulls, or even death. A recurring joke involves Peter's older sister being caught kissing her boyfriend (though the actual kissing is never shown), and the older characters have a couple of jokes about drinking (and they spike their own drinks). Mild language includes "hell," "boobie," and "wiseass"; there's also some potty humor, a glimpse of a character's underwear, threats, and remarks about a bully punching a kid in the face.

User Reviews

  • Parents say
  • Kids say
Adult Written byProudRaven'sClaw December 18, 2020

All's fair in love and war.

It's a really great movie, lots of laughs and hugs. Some of the pranks are very funny and some can get a little mean, But this movie is one you'll wan... Continue reading
Adult Written byWeston C. June 8, 2021


In the first minute of the movie opening opening credits and there was profanity in the song. And in the first minutes of the movie, after the opening credits,... Continue reading
Kid, 12 years old September 12, 2021

Terrible and violent

Terrible movie and there was a lot of violence and sexy stuff along with language too. Just a terrible comedy movie I can’t believe I have to give it a 1 star.... Continue reading
Teen, 15 years old Written byscratcher September 6, 2021

Me and my grampa LOVED IT

I watched before him and i liked so much that I wanted him to watch it. He loved it also. it doesn't make fun of old people till the point of it being disr... Continue reading

What's the story?

THE WAR WITH GRANDPA stars Robert De Niro as Ed, an older man who moves in with his daughter, Sally (Uma Thurman), and her family. Mayhem ensues when Ed's grandson, Peter (Oakes Fegley), is forced to give Grandpa his bedroom. Peter is determined to reclaim his room and enlists his friends to pull off a series of increasingly outrageous pranks to scare his grandfather away. But Grandpa isn't easily intimidated. He gets his own friends (Christopher Walken, Cheech Marin, and Jane Seymour) on board to wage an all-out battle.

Is it any good?

This impish comedy brings the whole family together with a nod to appreciating their elders just a little more. In other words, there's a winner in this War -- and it's grandparents. More than 18% of the U.S. population (about 57 million households) live in multigenerational households, and The War with Grandpa is one of the few mainstream films to represent that reality on-screen. That number has actually doubled since the movie's inspiration, Robert Keller Smith's popular children's novel, was first published in 1984. But that's not the only thing that's changed. Many people now have a greater awareness of how we treat one another -- and, as a result, some of the prank scenes are more wince-inducing than laugh-creating. The page vs. screen delivery system also has an impact. Reading about an 11-year-old tricking his grandfather into dropping marbles all over the floor plays differently than watching a 75-year-old man slip and fall flat on his back. That's a big part of why the cartoonish violence here is more heart-stopping than in, say, Home Alone: The targets in that movie were hardened, 30-something scoundrels, while here it's an older man who's so fragile his family thinks it's no longer safe for him to live alone. 

If Peter going after his grandfather feels unlikely, it's far more believable how Grandpa decides he'll defend his territory, particularly thanks to De Niro's charming performance. With his gentle, soothing voice and attitude, Grandpa never boils into rage (although it would be hard to blame him if he did), and he even shows a sense of respect for Peter's tactics: The apple doesn't fall far from the tree, it seems. Ed is having fun with the war, and his attitude lets viewers know that it's OK to laugh and enjoy the film. Moreover, every family member ultimately realizes how much they gain from giving up a little space for Grandpa. While a nice lesson is inserted at the end about why we should avoid war, it's pretty apples to oranges. The better, stronger message lands much more clearly: Spend some time with Grandpa; you won't regret it.

Talk to your kids about ...

  • Families can talk about whether they think the slapstick violence in The War with Grandpa is funny. Is it ever appropriate to laugh when someone gets hurt? 

  • Can you think of other movies that feature comical relationships between grandparents, adult children, and kids? How does this one compare to those?

  • Why do you think Peter acts out? How would you feel if you were Grandpa? How does putting yourself in someone else's shoes help you resolve conflict? Do you think the characters could have come to a solution without going to "war"?

  • If you have grandparents (or friends/neighbors of a similar age) in your life, what do you know about them? What achievements are they most proud of? What was their childhood like?

Movie details

Our editors recommend

For kids who love family comedies

Themes & Topics

Browse titles with similar subject matter.

Common Sense Media's unbiased ratings are created by expert reviewers and aren't influenced by the product's creators or by any of our funders, affiliates, or partners.

See how we rate

Streaming options powered by JustWatch

About these links

Common Sense Media, a nonprofit organization, earns a small affiliate fee from Amazon or iTunes when you use our links to make a purchase. Thank you for your support.

Read more

Our ratings are based on child development best practices. We display the minimum age for which content is developmentally appropriate. The star rating reflects overall quality.

Learn how we rate