IDW published an adaptation of Peter Beagle's novel, The Last Unicorn.
The adaptation is not without flaws: as a result of trying to cram the entire story into just 6 issues, they had to omit a lot of info and there is a lot of quick skipping from one scene to the next. If you are not familiar with the book or the movie, it can get confusing.
For example, the comic doesn't explain that Mommy Fortuna put a fake horn on the unicorn so that people who have lost the ability to recognize her would be able to see her as a unicorn. Readers may wonder why the horn is now red, and figure out the reason on their own, but the comic itself doesn't stop to clarify. That happens a lot
throughout the issues, even with important details like characters' motives, so if you want the full story you have to read the novel.
That said, the gorgeous art and moving adaptation of the most powerful scenes make this mini well worth reading :)( The unicorn lived in a lilac wood, and she lived all alone. )