"Kanon" was released as an adult game on June 4, 1999 in limited and regular editions, playable on a Windows PC as a CD-ROM. The limited edition came bundled with the remix album "Anemoscope" remixing background music tracks featured in the visual novel. Key released an all ages version on January 7, 2000 for Windows. An updated adult version called the "Kanon Standard Edition" was released on November 26, 2004 with added support for Windows 2000/XP as a DVD-ROM. The "Standard Edition" incorporates the extra graphics added to the earlier all ages version of the game, and other technical changes such as more save slots. An all ages version of the "Standard Edition" was released on January 28, 2005. An updated all ages version of "Kanon" compatible for Windows Vista PCs was released by Key on July 31, 2009 in a box set containing five other Key visual novels called Key 10th Memorial Box. Another all ages updated version compatible for Windows 7 PCs called "Kanon Memorial Edition" was released on April 30, 2010.