12Riven: The Psi-Climinal of Integral is a visual novel video game developed by KID, CyberFront, and SDR Project, and released on March 13, 2008 for the PlayStation 2 and April 16, 2009 for the PlayStation Portable. There is a regular edition, and a special edition which included the game's original soundtrack. KID are known for producing the Memories Off series, and the Infinity series which includes Never 7: The End of Infinity, Ever 17: The Out of Infinity, and Remember 11: The Age of Infinity. When KID declared bankruptcy in November 2006, production on the game was halted until CyberFront took over and resumed production.