Disgaea: Hour of Darkness (魔界戦記ディスガイア, Makai Senki Disugaia, lit. "Hell Chronicles Disgaea") is a tactical role-playing video game developed by Nippon Ichi Software and published by Nippon Ichi Software in Japan, Atlus USA, Inc. in North America, and Koei in Europe for the Sony PlayStation 2 video game console.
Nippon Ichi has also licensed or produced a wide variety of Disgaea merchandise, including a manga. In 2006, Nippon Ichi released a sequel called Disgaea 2: Cursed Memories for the PlayStation 2, as well as a 12 episode long anime titled Makai Senki Disgaea. A North American version of Disgaea was released for the PlayStation Portable entitled Disgaea: Afternoon of Darkness. A second sequel, Disgaea 3: Absence of Justice, was released for the PlayStation 3.