N+ is the console and handheld version of the game originally made for systems powering Adobe Flash, N, which was developed by Metanet Software. N+ for Xbox Live Arcade was developed by Slick Entertainment and published by Metanet Software. Unique versions of the game were also ported separately to the PlayStation Portable and Nintendo DS  by developers 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.