yes, there was a animal crossing movie. you probably never heard of it cuz in 2006 it was only released in japan on DVD. but then someone made an english dub of it.

watch the english dub here! click the link below

https://www.facebook.com/acnhtips/videos/animal-crossing-the-movie-for-those-who-havent-watched-yetall-credits-go-to-redd/623788438658538/