N+ is the video game version of the popular Flash game developed by Slick Entertainment and SilverBirch Studios for Xbox Live Arcade. The game is also being brought to Nintendo DS and PlayStation Portable by developer SilverBirch Studios and Atari. Metanet Software licensed their N IP for this deal, provided single player level design for both versions, and consulted on the project. The Xbox Live Arcade version was released on February 20, 2008, while the handheld versions are due out on August… (More on N)