Was released in two versions: Nier Replicant and Nier Gestalt, which feature slight alterations to the story elements.

The protagonist of Replicant is a young man, while the protagonist of Gestalt is an older man. As well, Replicant features a Japanese dialogue track, while Gestalt does not.

Replicant was released only in Japan, with the western release of Gestalt titled simply as Nier.