The War with Grandpa (2020)

The War with Grandpa is the kind of easygoing family comedy that knows exactly what it’s there to do: set up a simple, silly premise and wring it for warm laughs without turning mean-spirited. Watching a kid and his grandpa turn a domestic inconvenience into an all-out prank battle has a classic, Saturday-afternoon vibe, the sort of harmless escalation that earns steady chuckles and keeps things moving. Beneath the gags, it keeps circling back to what families do best—bicker, adapt, and ultimately find their way back to each other—so the laughs land with a little heart. It won’t be for viewers craving sharp satire or edgy humor, but if you want something lighthearted to watch together and leave the room in a better mood, it delivers.

The War with Grandpa is clearly aiming for a light, kid-friendly prank war with a sweet “family learns to get along” message, and you can see why the premise sounded harmless on paper. In practice, the jokes often land with a thud, the whole thing looks and feels oddly cheap for the talent involved, and the “war” escalations can come off more mean-spirited than playful. If you’re hoping for a warm, modern family comedy with clever writing, this will likely feel dated and tonally off. It may still work as background viewing for younger kids or for fans who just want to watch De Niro and the cast coast through a low-stakes setup without expecting many laughs.