This is the oldest animated Super Mario Bros. Cartoon. And it contains all the elements from the game. The plot is similar to with the whole Mario Bros. travel in Mushroom Kingdom to save Princess Peach from Bowser. Only the story is different.
There are minor and secondary characters entirely original for this movie only. Plus it has a few changes like Luigi wearing yellow instead of green, & the Mario Bros. are grocery store owners and not plumbers.
Despite all that the movie has a good flow to it as well as some pretty catchy Japanese voice talent. But for only 60 minutes long, there's so much more they could include in this movie.
Sadly this is the only existing Mario Bros. anime. And I think it wouldn't hurt to make another one that's done with newer animation. I mean if Pokemon can have a successful anime. Why not the Mario Bros, there's so much value that can make a highly interesting based off of a video game anime.
I didn't see this movie till most recently. And it's never been released outside of Japan at all. An English dub is out of the question as very few anime distribution companies would never dub anything this old and out of date animation.
The only way it would ever be released is to get it on a sub-only DVD and get permission by Nintendo in doing so.