Overlap’s Comic Gardo website published the final chapters of Yoshikawa Hideaki’s Maou-sama no Machizukuri: Saikyou no Dungeon wa Kindai Toshi (Dungeon Builder: The Demon King’s Labyrinth is a Modern City!) manga on March 21st and March 22nd, 2025.
The manga was based on Tsukiyo Rui’s light novel series, which was published by Overlap with illustrations by fuumi. The first novel was released in December 2016, and the eighth and final novel in June 2019.
Yoshikawa started the manga adaptation in March 2018 on Overlap’s Comic Gardo website, and Overlap published the manga’s first tankoubon volume in October 2018. The manga’s 12th and final volume was released on February 25th, 2025, ahead of the final chapters.
Seven Seas Entertainment publishes the manga in English under the name Dungeon Builder: The Demon King’s Labyrinth is a Modern City!, and it will release the 11th volume on June 17th, 2025. It describes the story below:
A demon lord decides to break from the evil mold when building his dungeon–and develops a pleasant city instead! In a world where demon lords build dungeons and devour human emotions, one rookie demon lord, Procel, has a new idea. Procel seeks to build a revolutionary new dungeon where humans and monsters can coexist. But first, Procel must defeat the Wind Demon Lord.