War with Grandpa is a 2020 English-language Comedy Drama movie written by Matt Ember and directed by Tim Hill and produced by Marvin Peart, Rosa Morris Peart and Phillip Glasser under the banner of Marro Films in collaboration with Sigh Films, The Fyzz Facility, West Madison Entertainment, Tri-G Films and Emmett/Furla Oasis. War with grandpa stars Robert De Niro in the title role along with an ensemble cast including Uma Thurman, Rob Riggle, Oakes Fegley, Laura Marano, Cheech Marin and Jane Seymour. The screenplay is written by Tom J. Astle and Matt Ember which is inspired from The War with Grandpa by Robert Kimmel Smith. The music was composed by Aaron Zigman. Cinematography was done by Greg Gardiner and editing by Peter S. Elliot and Craig Herring. The movie has a running time of 94 minutes. It was released on 20th November 2020. War with Grandpa was made on a budget of $38 million and at the box office it grossed only $23 million. Distribution rights for the motion picture were acquired by 101 Studios.