An indirect sequel, NieR: Automata, was released in February 2017 in Japan and March 2017 worldwide.
NieR is a continuation of another of Taro's works, Drakengard-specifically its fifth ending. The game was released in 2010 in Japan on April 22nd, Europe on April 23rd, and North America on April 27th. The North American and European versions are the same as Japan's NieR Gestalt, the name shortened to just NieR and released on both Xbox 360 and PlayStation 3.
Both games are based in the same world and have the same premise, only different in regards to Nier's appearance, his relationship with Yonah, and the year the game takes place. Two versions were released in Japan, NieR Gestalt (ニーア ゲシュタルト, Nīa Geshutaruto) for Xbox 360, and NieR Replicant (ニーア レプリカント, Nīa Repurikanto) for PlayStation 3. Developed by Cavia and published by Square Enix, it is the first game in the NieR series. NieR: Automata NieR, stylized as NIER in North America and Europe, is an action adventure video game directed by Yoko Taro.