Hatsune Miku: Project DIVA Extend (初音ミク -Project DIVA Extend-) is a 2011 rhythm game created by Sega and Crypton Future Media for the PlayStation Portable. The game is an expansion to the 2010 video game, Hatsune Miku: Project DIVA 2nd, and was first released on November 10, 2011 in Japan with no international release. Like the original the game primarily makes use of Vocaloids, a series of singing synthesizer software, and the songs created using these vocaloids most notably the virtual-diva Vocaloid Hatsune Miku. Similar to past games in the series, a companion game Hatsune Miku: Project DIVA Dreamy Theater Extend was released on the PlayStation 3 on September 13, 2012 with improved visuals and it also supports stereoscopic 3D for the first time in the series.