Cytus is a collection of rhythm games developed by Taiwanese game developer Rayark. The original Cytus rhythm game was first released on the iOS platform on 12 January 2012. The game was later released on Android on 7 August 2012. A port for PlayStation Vita and PlayStation Mobile, titled Cytus: Lambda, was released on 26 June 2013. An arcade version titled Cytus: Omega in collaboration with Capcom was revealed at JAEPO in February 2015 and was set for location testing in July 2015, but was ultimately canceled on 30 March 2018. A sequel game, Cytus II, was released on 18 January 2018, for iOS and March 2018 for Android. A remake of Cytus Alpha (stylized as Cytus α) was also released for the Nintendo Switch on 25 April 2019.