A free app for Android, by Komoe Game.

NieR Re[in]carnation is a game that allows you to experience the world of NieR in a different way. Not only can you play the game as a normal entry in the series, you can also experience it as a story. In this story, the protagonist is a girl who awakens on a cold stone floor. She is guided by a mysterious creature who calls herself Mama. Together they venture into the unknown, a place known only as The Cage. The girl is destined to reclaim what was lost, and atone for her sins.

The girl must travel through The Cage, which is filled with many different places and buildings. Along the way, she will encounter other characters, some of whom will accompany her while she is in the game, and others who will appear only in the story.

In this game, you will be able to explore The Cage and travel through it. However, you will need to find out what is hidden in the buildings and what the characters are doing in the game.

To find out what is hidden in the buildings, you will need to use the tools that are available in the game.