Clannad is the anime adaptation of the visual novel developed by KEY for Windows PCs in 2004, which was later ported to PlayStation consoles and the Xbox 360. The game was the best-selling PC game in 2004 and charted in national top 50 rankings several more times afterwards. Clannad has been adapted into four manga adaptations, an animated film, two anime series, two OVAs, comic anthologies, light novels and art books. The anime series and OVAs were licensed in North America by Sentai Filmworks in 2009. The first season of the animated series received positive to mixed reviews, while the second season Clannad After Story received wide critical acclaim.