The game uses a "freemium" model where the core application acts as a lengthy demo.
: As of early 2025, some users have reported the "Free" flag being removed from Steam's back-end, which may temporarily affect the visibility of the "Download" button. Game Overview
Originally released in Japan in 2012, Amantes amentes is considered the definitive "all-ages" edition of the game, featuring additional story content not found in previous versions. [Review] Dies irae – Amantes amentes - gareblogs