NieR Re[in]carnation

A girl awakens on a cold stone floor. She finds herself in an infinitely vast place filled with buildings that touch the very sky. Guided by a mysterious creature who calls herself Mama, she begins to explore her new surroundings. To reclaim what she has lost —and atone for her sins— she sets off on a journey through this place of unknown creation. ...A place known as The Cage. Source: The Game Website.