Purchase or use of this item is subject to the PlayStation®Network Terms of Service and User Agreement and this item's use restrictions. This item has been sublicensed to you by Sony Computer Entertainment America. One-time license fee for downloads to up to 2 console systems and 2 portable systems that are associated with the purchasing account. Knytt Underground ® 2012 Nifflas' Games. Pubished by Ripstone and Developed by Green Hill. "Knytt Underground" is a registered trademark of Nifflas' Games. All rights reserved.