Nippon Ichi Software, Inc. (日本一ソフトウェア, Nippon Ichi Sofutowea, known as Prism Kikaku Ltd. from July 1993 to July 1995) is a Japanese video game developer and publisher. They are responsible for such titles as Disgaea: Hour of Darkness, Phantom Brave, La Pucelle: Tactics and Rhapsody: A Musical Adventure. More recently, particularly through their North American branch, NIS America, they have also published anime titles.