Legend of the Galactic Heroes Gaiden: Spiral Labyrinth is a oVA anime that premiered in winter 2000, produced by Artland.

About the production: the story comes from a other, there are 28 episodes of about 26 minutes and its current status is "finished".

Its main genres are drama and sci-fi, with themes such as Military, Space, Politics and War.

On AniList, Legend of the Galactic Heroes Gaiden: Spiral Labyrinth has an average score of 77%, a very good score, and appears on 6,786 users' lists.

The franchise continues in or follows from: Ginga Eiyuu Densetsu: Waga Yuku wa Hoshi no Taikai.

A prequel to Legend of Galactic Heroes, focusing more on Yang Wen-li; how he became the hero of El Facile and how he handled a couple of assignments he received afterward. Spiral Labyrinth also continues with the background of Reinhard and Kircheis where the first Gaiden left off. A collection of independent short stories taking place prior to the Overture to a New War, some of which are adapted from the novel and some of which are completely original.

Official synopsis from AniList.