beatmania IIDX (ビートマニア ツーディーエックス Bītomania Tsūdiekkusu) is a series of rhythm video games, that was first introduced by Konami in Japan on February 26, 1999. IIDX has since spawned 23 arcade releases and 14 console releases on the Sony PlayStation 2. It is the sequel to the beatmania game series, and part of the Bemani line of music games. A PC release titled beatmania IIDX INFINITAS has been announced, and began alpha testing in September 2015.