Overlord is a tV series anime that premiered in summer 2015, produced by MADHOUSE.

About the production: the story comes from a light novel, there are 13 episodes of about 24 minutes and its current status is "finished".

Its main genres are action, adventure and fantasy, with themes such as Isekai, Anti-Hero, Skeleton and Ensemble Cast.

On AniList, Overlord has an average score of 76%, a very good score, and appears on 410,058 users' lists.

The franchise continues in or follows from: Overlord II.

The story takes place in the year 2138 when virtual reality gaming is booming. Yggdrasil, a popular online game is quietly shut down one day. However, the protagonist Momonga decides to not log out. Momonga is then transformed into the image of a skeleton as "the most powerful wizard." The world continues to change, with non-player characters (NPCs) beginning to feel emotion. Having no parents, friends, or place in society, this ordinary young man Momonga then strives to take over the new world the game has become. (Source: Anime News Network)

Official synopsis from AniList.