I have to say, however, that even as a fan of the original series, I was quite disappointed. So here I am writing a review for anyone who might be about to dive into the movie with any sort of heightened expectations.
The recap is basically just what it says it is, a recap. It adds NOTHING to the TV anime, like new scenes or dialogue (apart from the 30-second scene in the beginning), and improves NOTHING even though Madhouse should have had enough time to up the quality even by a bit. The animation is the same, the CG fights are the same etc. You could watch the TV show and it wouldn't make much difference apart from giving you the full story.
The only thing saving this movie is the fact that it's Overlord, Momonga is cool, Albedo is sexy and funny, and all the characters are basically a joy to watch. The music hasn't changed and it is passable.
So yeah, if you're going into this movie expecting something different or better from the TV anime, then don't. It's just the same thing, minus a couple scenes stuck together and thrown in the theater for money money money. 5/10.
