Gestalt and Replicant are the 360 and PS3 versions.
http://www.andriasang.com/e/blog/2009/0 ... nt_trailer
Anoop Gantayat wrote:As revealed earlier this week, NieR RepliCant is the PS3's counterpart to Xbox 360's NieR Gestalt. Both games put players in control of a character named "Nier," although the two characters do appear to be different, with the 360 Nier looking far older than the PS3 version's.
The two versions also have a mix of similarities and differences in their basic premise. Both games have Nier on a quest to find a cure for an illness afflicting a family member. In Gestalt, the family member is Nier's daughter. In RepliCant, it's his younger sister, Yonah.
Edit: Probably should've linked to the Replicant trailer.
http://www.youtube.com/watch?v=qgbgE2Ia6D0