The original Chaos;Head visual novel was released for the Xbox 360 in Japan, marking the debut of the game.
Chaos;Head was later ported to PlayStation Portable and Microsoft Windows, expanding its availability beyond the Xbox 360 platform.
Chaos;Head Noah, an enhanced version of the original game with additional content and storylines, was released for the Xbox 360.
An anime adaptation of Chaos;Head aired, increasing the franchise's popularity outside the gaming community.