NiGHTS (ナイツ, Naitsu) is a series of two games developed by Sonic Team and published by Sega. The series started in 1996 after the release of Sonic & Knuckles in 1994 with Nights into Dreams, but the ideal of the game came around in 1992 during the development of Sonic the Hedgehog 2. Sonic Team veterans, Yuji Naka, Naoto Ohshima, and Takashi Iizuka led the development of the first game.
Despite the series only having two games it has quite a cult following and one of Sega's most popular games.
Plot
The games stars the character of the same name, NiGHTS, an androgynous being known as a Nightmaren, beings with the purpose to do evil, but NiGHTS rebel against them and protects the dream world from them.
Setting
Its storyline, which straightforwardly depicts universal themes such as dreams, courage, and family love, as well as its fantastic setting and the background music that colors it, are still highly acclaimed today, and along with the Sonic series and Phantasy Star Online series, it is considered a representative work of Sega's Sonic Team.
Japanese
NiGHTSとは (ナイツとは) [単語記事] - ニコニコ大百科 (NicoNico Encyclopedia)