Air is a Japanese visual novel developed by Key which was originally released as an adult game on September 8, 2000 playable on personal computers (PC) as a CD-ROM. Subsequent versions with the adult content removed were sold playable on the PC, Dreamcast, and PlayStation 2. The PC version with adult content was re-released with added support for Windows 2000/XP under the name Air Standard Edition on April 8, 2005. Air was made available to play on the PlayStation Portable, and SoftBank 3G and FOMA cell phones in 2007. Key re-released Air compatible with Windows Vista in July 2009 and an Air Memorial Edition compatible with Windows 7 was released in May 2010; the Vista/7 editions were rated for all ages.