Dies irae (Japanese: ディエス・イレ, Hepburn: Diesu Ire) is a visual novel video game developed by Light, originally released in 2007 in Japan.

As in most visual novels, the gameplay mostly consists of reading text on the screen (representing narration or dialogue) accompanied by images showing characters and locations.

[citation needed] Prior to the events of the story, the Longinus Dreizehn Orden, a group of sorcerers, perform a ritual in Berlin during World War II, using the lives lost in battle as a sacrifice for their spell.

Dies irae was developed by Light,[2] and was produced by Hattori Michisato and written by Takashi Masada, with art by G-Yuusuke and music by Keishi Yonao.

[4] A Nintendo Switch version of Amantes amentes, which includes an additional scenario that serves as a prequel to the mobile game Dies irae Pantheon.

In addition to the translation, the localization team handled the debugging of the English release and advised Light on what kind of merchandise would appeal to American players.