Rocksmith is a music video game produced by Ubisoft, based on the technology in the unreleased project Guitar Rising. The game's main focus is the unique feature that allows players to plug in virtually any electric guitar and play. In North America, it was released on the PlayStation 3 and Xbox 360 platforms in October 2011. Rocksmith was released on PlayStation 3 and Xbox 360 during September 2012 in Australian and European markets and October 2012 in Japan. A Windows version was released on October 16, 2012 after several delays. An expansion adding bass guitar compatibility became available on August 14, 2012. A second release which integrates the bass expansion as well as additional refinements became available on October 16, 2012. Rocksmith 2014 is an upcoming sequel.