The World of Recycled Vessel, also known as 15 Nightmares, is the first and only downloadable content for NieR RepliCant and NieR Gestalt, and is available on PlayStation Network and the Xbox Live Marketplace for $6.99/6.99€/￥864.
It includes:
- 3 battle mission packs
- 2 new outfit sets
- 3 new weapons
- New types of Shades
- New remixed tracks.

Players get access to the diary of Nier's deceased mother in NieR RepliCant and wife in NieR Gestalt, who died of the Black Scrawl. As the chapters of the diary progress, it shows how Nier's mother/wife slowly succumbed to the disease, and in turn, became insane.