The Mouse That Roared (1959) runs 1 h 23 min, is rated PG in the US and averages 6.4 from 150 TMDB members. The Duchy of Grand Fenwick decides that the only way to get out of their economic woes is to declare war on the United States, lose and accept foreign aid. They send an invasion force (in chain mail, armed with bows and arrows) to New York and they arrive during a nuclear drill that has cleared the streets.
Availability loads live for your country. See where The Mouse That Roared streams (JustWatch via TMDB) →
Streaming availability by JustWatch. In the US, as of 2026-11-08: YouTube Free (free with ads), Tubi TV (free with ads).
The Mouse That Roared on TMDB · This product uses the TMDB API but is not endorsed or certified by TMDB.

Lights Down is a free tool: tell it your streaming services and how long you have, and it ranks what you can stream tonight, with a this-or-that, a roll, a bracket and a wheel. Movie data from TMDB; streaming availability by JustWatch. Page updated 2026-11-08. This product uses the TMDB API but is not endorsed or certified by TMDB. Lights Down is a Somebody Decide program. How the data works · Legal & privacy · Tonight's lists